Steve's mom gave him $20.00 on Monday morning to use on lunches. At his school, the school lunch costs $1.75, which he bought Monday through Thursday. On Friday, he decided to buy 3 slices of pizza instead of buying the school lunch. If the pizza costs $1.80 per slice, then how much of the money is left at the end of the school week?
A.
$9.40
B.
$14.70
C.
$9.35
D.
$7.60