On Saturday, Bob's bakery sold 80 cupcakes for $5 each. His profit margin on the cupcakes was 50%. Which calculation yields the amount of profit he made on the cupcakes? A) 50 × 5, then 250 ÷ 2 B) 80 × 5, then 400 ÷ 2 C) 80 × 5, then 400 ÷ 50 D) 80 × 50, then 4,000 ÷ 5
