RC 66 is related to SD 67 in a certain way. In the same way, NV 3 is related to OW 4. To which of the following is CH 9 related, following the same logic ?

Given:

RC 66 → SD 67, NV 3 → OW 4
CH 9 → ?

​Logic: Each letter is shifted +1 forward in the alphabet, and the number is increased by +1.​

R +1 → S 

C +1 → D 

66 +1 → 67

N +1 → O 

V +1→ W 

3 +1 → 4

Similarly,

​CH 9 → ?
​C +1 → D

H +1 → I

9 +1 → 10

So the next term is:  DI 10

Thus, the correct option is: (c)