What should come in place of the que stion mark (?) in the given series in order to make it logically complete?
CE21 HJ25 MO33 RT45 ?

Information Given:
Series: CE21, HJ25, MO33, RT45, ?

Logic: Letters: Both letters move +5 each term.
Numbers: Increasing pattern +4, +8, +12, +16.

Letters:
C → H → M → R → W (+5 each)
E → J → O → T → Y (+5 each)

So next letters = WY

Numbers:
21 → 25 (+4)
25 → 33 (+8)
33 → 45 (+12)
45 → 61 (+16)

So next number = 61

Next term is: ​WY61

Final Answer:
WY61

Final Correct Option:
(d)