What should come in place of the question mark (?) to complete the following letter cluster series?
UME, OPG, ISJ, EVN, (?)

Correct option is C

Logic::
The first position follows two patterns, for the first two terms the position is decreasing by 6, and for the next two terms decreasing by 4.
The second position follows the pattern of increasing by 3.
The third position follows the pattern of increasing by the consecutive natural numbers (2, 3, 4, 5).
Explanation:
First position:
U to O: -6
O to I: -6
I to E: -4
E to A: -4
Second position:
M to P: +3
P to S: +3
S to V: +3
V to Y: +3
Third position:
E to G: +2
G to J: +3
J to N: +4
N to S: +5
Thus, the missing term in the series will be: AYS.