A.0.339
B.0.387
C.0.661
D.0.613
参考答案A,C
解析:方案1:C₁=4634.08÷(4634.08+9045.21)=0.339
方案2:C₂=9045.21÷(4638.08+9045.21)=0.661
方案2的年费用:
1500+120000×(A/P,6%,60)+5000×(P/F,6%,20)×(A/P,6%,60)+5000×(P/F,6%,40)×(A/P,6%,60)-5000×(P/F,6%,60)×(A/P,6%,60)
=1500+120000×0.0619+5000×0.3118×0.0619+5000×0.0972×0.0619-5000×0.0303×0.0619=9045.21(万元)
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