Correct option is A
(a) GIB:
G to I: +2 steps forward
I to B: -7 steps backward
(b) VYB:
V to Y: +3 steps forward
Y to B: +3 steps backward
(c) PSV:
P to S: +3 steps forward
S to V: +3 steps forward
(d) CFI:
C to F: +3 steps forward
F to I: +3 steps forward
Thus, the correct answer is (a) GIB.