Correct option is B
Given:
D6W, G7T, M11N, V20E, ?

Logic: The difference between numbers is the square of natural numbers.
The first alphabet is increased to +3,+6,+9,+12 positional value.
The last alphabet is decreased by -3,-6,-9,-12 positional value.
D6W→ D+3=G, 6+1=7, W-3=T,
→ G7T→ G+6=M, 7+4=11, T-6=N,
→ M11N → M+9=V, 11+9=20, N-9 =E → V20E
V+12=H, 20+16=36, E-12=S → H36S
H36S, is correct answer
Thus, correct option is, (b)