There were 7 pizzas, 5 people ate all of the pizzas. Each person ate an equal amount of pizza. How much pizza did each person eat?
Which equation can be used to solve the problem?

A.) 5÷ 1/7 = 35

B.) 7÷ 1/5 = 35

C.) 5÷7 = 5/7

D.) 7÷5 = 7/5