单项选择题
根据下面资料回答96~100题
A.3227.91 B.3156.47 C.3100.85 D.2919.44
A.3665.97 B.3776.22 C.5806.85 D.6088.49
A.24.15% B.28.54% C.32.72% D.38.69%