Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.
AFKP
GKPS
SXCH
JOTY

Correct option is C

Given:
AFKP, GKPS, SXCH, JOTY

​Logic:
In three clusters, each letter is +5 positions forward from the previous letter, but one cluster does not follow this pattern.

Explanation (applied left to right):
AFKP: A +5 = F, F +5 = K, K +5 = P
GKPS: G +5 = K, K +5 = P, P +5 = S
JOTY: J +5 = O, O +5 = T, T +5 = Y
SXCH: S +5 = X, X +5 = C (cyclic order, X +5 → C), C +5 = H (correct cyclically, but not in consistent forward alphabetical sequence like others)
Odd one = SXCH

​Final Answer:
SXCH

Final Correct Option:
(b)​