A.>80%;<5.0‰;100% B.>85%;<5.0‰;100% C.>70%;<5.0‰;100% D.>70%;<10.0‰;90%
A.>90% B.>80% C.>85% D.>75%
A.2個;2個 B.2個;3個 C.3個;2個 D.3個;3個