Select the letter-cluster that can replace the question mark (?) in the following series.RAB, TDG, VGL, ? ,ZMV

Select the letter-cluster that can replace the question mark (?) in th

1.	Select the letter-cluster that can replace the question mark (?) in the following series.RAB, TDG, VGL, ? ,ZMV
A.	XJQ
B.	YLR
C.	XKQ
D.	YKR
E.	None
Answer» B. YLR