PASCAL 2000 Problem 11

A store had a sale on T-shirts. For every two T-shirts purchased at the regular price, a third T-shirt was bought for \$1.00. Twelve T-shirts were bought for \$120.00. What was the regular price for one T-shirt?

Answer Choices
A. \$10.00
B. \$13.50
C. \$14.00
D. \$14.50
E. \$15.00