Three debts, the first for $1,720.00 due four months ago, the second for $1,315.00 due in 5 months, and the third for $1,640.00 due in 7 months, are to be paid by a single payment today. How much is the single payment if money is worth 7.5% p.a. and the agreed focal date is today?

A) 1275.15

B) 1763.00

C) 4609.41

D) 1571.26