Which numbers are necessary to solve this problem? Joseph bought 5 pizzas for his party. Each pizza can feed 3 people. There were 12 people invited to his party. How many people could Joseph feed with the pizza? A. 3 people, 12 people B. 5 pizzas, 12 people C. 5 pizzas, 3 people D. 5 pizzas, 3 people, 12 people