The diaper service where you work bills customers once a week. Each week, it charges 30¢ each for the first 75 diapers used, and 25¢ each for any additional diapers. How much should you bill a family that used 100 diapers last week?
A.

$18.75
B.

$22.50
C.

$25.00
D.

$28.75
E.

$30.00