Answer:
Option C
Explanation:
1st letter : $N-3\rightarrow K, K-3\rightarrow H, H-3\rightarrow E, E-3\rightarrow B$
Middle Numbers : $5+2\rightarrow 7, 7+3\rightarrow 10, 10+4\rightarrow 14, 14+5\rightarrow 19$
2nd letter : $V-2\rightarrow T, T-2\rightarrow R, R-2\rightarrow P, P-2\rightarrow N$
Hence the answer is (c).