单项选择题
A.2.25% B.3.12% C.3.87% D.5.77%
A.22.5%B B.15.08% C.14.47% D.16.75%
A.①→②→③→④→⑤ B.⑤→③→②→④→① C.⑤→②→③→④→① D.⑤→③→④→②→①