Ganga, Kaveri, and Narmada are three women who buy four raw materials (Mango, Apple, Banana and Milk) and sell five finished products (Mango smoothie, Apple smoothie, Banana smoothie, Mixed fruit smoothie and Fruit salad). Table-1 gives information about the raw materials required to produce the five finished products. One unit of a finished product requires one unit each of the raw materials mentioned in the second column of the table.

Finished product	Raw materials required
Mango smoothie	Mango, Milk
Apple smoothie	Apple, Milk
Banana smoothie	Banana, Milk
Mixed fruit smoothie	Mango, Apple, Banana, Milk
Fruit salad	Mango, Apple, Banana

One unit of milk, mango, apple, and banana cost

$\text{Milk}=5,\text{Mango}=3,\text{Apple}=2,\text{Banana}=1$

respectively. Each unit of a finished product is sold for a profit equal to two times the number of raw materials used to make that product.

$\text{Profit per unit}=2\times \text{(Number of raw materials used)}$

For example, apple smoothie is made with two raw materials (apple and milk) and is sold for a profit of

$\text{Profit}=2\times 2=4$

per unit.

Leftover raw materials are sold during the last business hour of the day for a loss of $\mathrm{per\; unit}$

The amount, in rupees, received from sales (revenue) for each woman in each of the four business hours of the day is given in Table-2.

Table-2

Business Hour	Ganga	Kaveri	Narmada
Hour 1	23	19	31
Hour 2	21	22	21
Hour 3	29	30	23
Hour 4 (last hour)	30	27	22

The following additional facts are known.

1. No one except possibly Ganga sold any Mango smoothie.
2. Each woman sold either zero or one unit of any single finished product in any hour.
3. Each woman had exactly one unit each of two different raw materials as leftovers.
4. No one had any banana leftover.

What BEST can be concluded about the total number of units of milk the three women had in the beginning?