A.6~9之内 B.8~12之内 C.6~12之内 D.5~8之内
A.0.3% B.0.5% C.0.7% D.1.2%
A.1m B.1.5m C.2m D.2.5m
A.1/3 B.1/4 C.1/5 D.1/2