Select the option that will fill in the blank and complete the series correctly.

BAC, QRP, EDF, TUS, ___________.

Given: BAC, QRP, EDF, TUS, ___________.

Logic:  Each letter follows an alternating pattern of First letter  (+15, - 12), Second letter  (- 9, +12), and Third letter  (+13, -10) in three separate sequences.

First series: B, Q, E, T, ?
B + 15 = Q
Q - 12 = E
E + 15 = T
T - 12= H
 series: A, R, D, U, ?
A - 9 = R
R + 12 = D
D - 9 = U
U + 12 = G
 series: C, P, F, S, ?
C + 13 = P
P - 10= F
F + 13 = S
S - 10 = I
Therefore, the next term is HGI.
Thus, the correct option is (c)HGI ​​