Carlos went to a sports store to buy running shoes. Running shoes were on sale, with prices reduced by 20 \% on every pair of shoes. Carlos also knew that he had to pay a 7.5 \% sales tax on the discounted price. He had \$ 43. What is the original (before discount) price of the most expensive shoes he could afford to buy?
Answer Choices
A. \$ 46
B. \$ 50
C. \$ 48
D. \$ 47
E. \$ 49