Mr. Reed is buying two mountain bikes for his two sons. Best Bikes is offering the model he wants to purchase for $525, and he can use a coupon for $50 and 5% off each bike. Fast Bikes is selling the same mountain bike model for $559, and he can use a coupon for $100 off each bike. Which store offers the best price? How much money will Mr. Reed save by purchasing both bikes from that store? A) Fast Bikes; $7.75 B) Best Bikes; $7.75 C) Fast Bikes; $15.50 D) Best Bikes; $15.50