Select the option that can replace the question mark (?) in the following series.

CXM9, EVO7, GTQ5, IRS3, ?

Given: CXM9, EVO7, GTQ5, IRS3, ?

First Letter Pattern:
C + 2 → E
E + 2 → G
G + 2 → I
I + 2 → K
Second Letter Pattern:
X - 2 → V
V - 2 → T
T - 2 → R
R - 2 → P
Third Letter Pattern:
M + 2 → O
O + 2 → Q
Q + 2 → S
S + 2 → U
Number Pattern:
9 - 2 → 7
7 - 2 → 5
5 - 2 → 3
3 - 2 → 1
Thus, the correct option is (d) KPU1 
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