单项选择题

A.0.2Erl(正常)和0.4Erl(异常)
B.0.3Erl(正常)和0.6Erl(异常)
C.0.4Erl(正常)和0.8Erl(异常)
D.0.4Erl(正常)和0.6Erl(异常)