A.9％ B.10％ C.11％ D.12％
A.5% B.3% C.2% D.8%
A.20.19％ B.23.08％ C.24.28％ D.27.55％
A.0.07 B.0.13 C.0.21 D.0.38
A.50% B.40% C.60% D.70%
