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)
A、7.58 B、7.02 C、16 D、14.81