单项选择题

A.22~24℃,50~60%,45~50dB
B.18~22℃,50~60%,45~50dB
C.22~24℃,60~70%,45~50dB
D.18~22℃,50~60%,35~40dB
E.24~26℃,55~65%,45~50dB