A.-4 B.0 C.+5 D.+10
A.1350 B.1300 C.1250 D.1200
A.1.0% B.1.3% C.1.5% D.1.8%
A.8 B.16 C.24 D.30
A.7~12 B.8~13 C.9~14 D.10~15
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