-种核酸外切酶与pApGpUpCpApG -pU -起保温,其水解产物中不含有
A.PA +pG +pUpCpApGpU
B.PApG +pUpC +pApGpU
C.2pA +2pG +2pU +pC
D.PApGpUpCpA +pG +pU
E.PApGpUpCpApG +pU