单项选择题

A.(-d|d)d*E(-d|d)d*|(-d|d)*.d*(ε|E(-d|d)d*)
B.(-d|d)dd*(.|ε)d*|(ε|E(-d|d)d*)
C.(-|d)dd*E(-|d)d*|(-d|d)dd*.d*(ε|E(-|d)d*)
D.(-d|d)dd*E(-d|d)d*|(-d|d|)dd*.d*(ε|E(-dd*|dd*))