Complete the series.
HIG, KLJ, NOM, (...)

Correct option is A

HIG, KLJ, NOM, (...)
Every letter is +3 places ahead of their previous letter,
H+3 = K ,I+3=L, G+3=J,
Similarly
K+3 = N ,L+3=O ,J+3=M,
N+3 = Q , O+3=R,  M+3=P
Thus, next word must be QRP