Select the related letter from the given alternatives. CXFU : AZBY :: GTNM : ?

1. Find the pattern in the first pair (CXFU : AZBY) by shifting positions:
C (-2) -> A
X (+2) -> Z
F (-4) -> B
U (+4) -> Y
The logic sequence is: -2, +2, -4, +4
2. Apply the exact same pattern to GTNM:
G - 2 = E
T + 2 = V
N - 4 = J
M + 4 = Q
3. Final output: EVJQ