Your opening balance this month was $1264. In the last thirty days, you made the following purchases: $57.35, $54.15, and $125.00. You are charged 15 annual interest (or 1.25 a month). If you pay full month's interest on those purchases, what will your new balance be?
a. $1473.90
b. $1410.65
c. $1409.90
d. $1381.15