Select the option that is related to the fifth letter cluster in the same way as the second letter cluster is related to the first letter cluster and the fourth letter cluster is related to the third letter cluster.
CWE : ZFX :: PYT : MDI :: KIL : ?

Given: CWE : ZFX :: PYT : MDI :: KIL : ?

Logic: Addition of face letters is 29.

​Explanation:

For CWE : ZFX 

C + Z = 29, W +  F = 29, E + X = 29

And, PYT : MDI 

P + M = 29, Y +D = 29, T + I= 29

Similarly, follow the same pattern for KIL:

K + R = 29, I + T = 29, L + Q = 29

​RTQ is the final answer.

Thus, the correct option is option (b).