A: 100×[(PVA10%,15)-(PVA10%,5)]
B: 100×(PVA10%,10)×(PV10%,5)
C: 100×[1-(PV10%,10)]/10%×(1+10%)-5
D: 100×(FVA10%,10)×(PV10%,15)
E: 100×(PVA10%,10)×(PV10%,15)