In a certain code language,
‘Several single port around’ is coded as ‘po xl yu vb’
‘Single event cost edition’ is coded as ‘rf zx vb wa’
‘Cost around public order’ is coded as ‘km po rf tf’
‘Public host winter edition’ is coded as ‘vc ur km zx’

If ‘several books’ is coded as ‘xl sa’ , then what will be the code for ‘port maintenance cost’?

To find the code for the phrase ‘port maintenance cost’, let us decipher the code for each individual word by analyzing the given statements step-by-step.

1. Identify the code for ‘around’ and ‘cost’:
Comparing Statement 1 and Statement 3:
• Statement 1: ‘Several single port around’ = ‘po xl yu vb’
• Statement 3: ‘Cost around public order’ = ‘km po rf tf’
The common word between these two statements is ‘around’, and the common code is ‘po’.
Therefore, code for ‘around’ = ‘po’.

Comparing Statement 2 and Statement 3:
• Statement 2: ‘Single event cost edition’ = ‘rf zx vb wa’
• Statement 3: ‘Cost around public order’ = ‘km po rf tf’
The common word between these two statements is ‘cost’, and the common code is ‘rf’.
Therefore, code for ‘cost’ = ‘rf’.

2. Identify the code for ‘several’, ‘single’, and ‘port’:
Comparing Statement 1 and Statement 2:
• Statement 1: ‘Several single port around’ = ‘po xl yu vb’
• Statement 2: ‘Single event cost edition’ = ‘rf zx vb wa’
The common word between these two statements is ‘single’, and the common code is ‘vb’.
Therefore, code for ‘single’ = ‘vb’.

Now, from Statement 1, we have:
• ‘Several single port around’ = ‘po xl yu vb’
Since ‘around’ = ‘po’ and ‘single’ = ‘vb’, the remaining words ‘several’ and ‘port’ correspond to ‘xl’ and ‘yu’ in some order.
We are given additional information: If ‘several books’ is coded as ‘xl sa’.
This confirms that the code for ‘several’ = ‘xl’.
Consequently, the code for ‘port’ = ‘yu’.

3. Determine the code for ‘maintenance’:
The word ‘maintenance’ does not appear in any of the original coded statements.
Hence, it must be represented by a completely new code that has not been used anywhere in the given clues (i.e., not po, xl, yu, vb, rf, zx, wa, km, tf, vc, ur, sa).

4. Assemble the complete code for ‘port maintenance cost’:
• ‘port’ = yu
• ‘cost’ = rf
• ‘maintenance’ = a new code, which in the options is nh.

Thus, the code for ‘port maintenance cost’ is yu nh rf.

The correct option is yu nh rf.