单项选择题

A.58C和57C排出率都﹥10%
B.58C和57C排出率都﹤10%
C.57C排出率﹥10%,58C排出率﹤5%
D.57C排出率﹥10%,58C排出率﹤10%
E.58C排出率﹥10%正常,57C排出率﹤5%