Study the information carefully and answer the questions given below.

Eight persons A, B, C, D, E, F, G and H are members of a three-generation family, with no single parent. G is the daughter-in-law of D. B has no daughter. H is the aunt of A. G is the sister-in-law of C. C is married member of the family. B is the grandfather of A. C and A are of opposite gender. E is the brother of F and has no child.

How many male members are there in the family?

Based on the provided information, we can reconstruct the family tree step-by-step to find the number of male and female members.

Step 1: Identify the generations and spouses
There are eight members (A, B, C, D, E, F, G, and H) spanning three generations, with no single parents. This means every parent in the family must have their spouse present in the family.

Step 2: Determine Generation 1
We are given that B is the grandfather of A. Thus, B belongs to Generation 1 and A belongs to Generation 3.
Since B is a parent/grandfather and there are no single parents, B must be married. D is also in the family, and we are told G is the daughter-in-law of D. This indicates D belongs to Generation 1 as the grandmother (married to B).

Step 3: Analyze Generation 2 and the children of B and D
We are told B has no daughter. This means all of B's children are sons (males).
Let us find the children of B and D:
- E is the brother of F and has no child. Thus, E and F are sons of B (both males).
- C is a married member of the family. Since B only has sons, C must also be a son of B (male).
- H is the aunt of A. Since B has no daughters, H cannot be B's daughter. Therefore, H must be an aunt by marriage, meaning she is married to one of the sons of B.
- G is the daughter-in-law of D, so G is married to one of the sons of B and D.
- G is the sister-in-law of C. Since G is married to C's brother, this fits perfectly if G is married to F, and C is married to H.

Step 4: Determine the relationships and genders
Let's list the couples and their genders:
1. B (Male) and D (Female) are married (Generation 1).
2. Their children are C, F, and E (all males).
3. F (Male) is married to G (Female) (Generation 2). They are the parents of A (Generation 3).
4. C (Male) is married to H (Female) (Generation 2). H is the aunt of A.
5. E (Male) is unmarried and has no children.
6. A belongs to Generation 3. We are told "C and A are of opposite gender". Since C is male, A must be Female.

Step 5: Count the male members
Now, we count the male members in the family:
- B (Grandfather) - Male
- C (Son) - Male
- E (Son) - Male
- F (Son) - Male

Therefore, there are exactly Four male members in the family.