Correct Answer - Option 4 : HFU
For first letter of each element:
J + 8 = R, R + 8 = Z, Z + 8 = H, H + 8 = P
For second letter of each element:
R - 4 = N, N - 4 = J, J - 4 = F, F - 4 = B
For third letter of each element:
T + 9 = C, C + 9 = L, L + 9 = U, U + 9 = D
Hence, HFU is correct.