Your opening balance this month was $1,664.00. In the last thirty days you made the following purchases: $27.35, $54.15, and $125.00. You are charged 15% annual interest (or 1.25% per month). If you pay a full month's interest on those purchases, what will your new balance be?
a) $1,893.88
b) $1,964.33
c) $1,993.88
d) $2,100.25