头期胃液分泌的特点是

A.胃液的酸度含量较高而酶含量较低

B.胃液的酸度低而酶含量也低

C.胃液的酸度含量较高而酶含量更高

D.胃液酶含量较高而酸度更高

E.胃液的酶含量较高而酸度较低