Choose the missing terms out of the given alternatives : AYD, BVF, DRH, ?, KGL

Answer: Option B

1st letter :A+1 = B, B+2 = D, D+3 = G, G+4 = K
2nd letter :Y-3 = V, V-4 = R, R-5 = M, M-6 = G
3rd letter :D+2 = F, F+2 = H, H+2 = J, J+2 = L