Answer:
Option D
Explanation:
1st letter : $B+2 \rightarrow D, D+2 \rightarrow F, F+2\rightarrow H$
2nd letter : $M+1 \rightarrow N, N+1 \rightarrow O, O+1\rightarrow P$
3rd letter : $X-1 \rightarrow W, W-2 \rightarrow U, U-1 \rightarrow T$
Hence the answer is (d).