单项选择题
A.2.6% B.17.5% C.80% D.85% E.90%
A.17.5% B.4.4% C.80% D.85% E.90%
A.4.4% B.30% C.80% D.90% E.85%
A.56.3% B.80% C.89% D.4.4% E.95%
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