Ms. Baetz will receive a 25 % discount off her cellphone bill . Her monthly cell phone plan charges a flat monthly fee $30.00 plus $0.10 per minute . If m.s baetz talks on her call phone for 200 minutes during the first moth of cell phone service , what will be the amount of her first cell phone bill ?
A. 50.00
B. 37.50
C. 42.50
D. 25.00