A . 2.1×(P/F,12%,1)+2.205×(P/F,12%,2)+22.05×(1+2%)×(P/F,12%,2)B . 2.1/(12%-5%)+22.05×(1+2%)×(P/F,12%,2)C . 2.1×(P/F,12%,1)+2.205×(P/F,12%,2)+22.05×(1+2%)×(P/F,12%,3)D . 2.1/(12%-5%)+22.05×(1+2%)×(P/F,12%,3)
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