Which letter-cluster will replace the question mark (?) in the following series?PSV, UXA, ZCF, EHK, ?

Which letter-cluster will replace the question mark (?) in the followi

1.	Which letter-cluster will replace the question mark (?) in the following series?PSV, UXA, ZCF, EHK, ?
A.	JMP
B.	JNP
C.	JMO
D.	IMP
Answer» B. JNP