A cell phone plan costs \$ 20 each month, plus 5 \phi per text message sent, plus 10 \phi for each minute used over 30 hours. In January Michelle sent 100 text messages and talked for 30.5 hours. How much did she have to pay?
Answer Choices
A. \$ 24.00
B. \$ 24.50
C. \$ 25.50
D. \$ 28.00
E. \$ 30.00