Select the letter-pair that can replace the question mark (?) in the following series?AR, CU, EX, GA, ?

Select the letter-pair that can replace the question mark (?) in the f

1.	Select the letter-pair that can replace the question mark (?) in the following series?AR, CU, EX, GA, ?
A.	JE
B.	ID
C.	IF
D.	KF
Answer» C. IF