P, O, R be regular expression over , P is not , thenR=Q + RP has a unique solution:

P, O, R be regular expression over , P is not , thenR=Q + RP has a u

1.	P, O, R be regular expression over , P is not , thenR=Q + RP has a unique solution:
A.	Q*P
B.	QP*
C.	QP
D.	(PO) *
Answer» C. QP