The Candy Store held a raffle, and Matt won the grand prize. He won a gift card to the store, as well as a bag of giant lollipops. He gave 21 lollipops to his friends, and he kept the remaining 7 lollipops. Which equation can be solved for n to find the total number of lollipops in the bag? A) n 21 = 7 B) n − 21 = 7 C) n + 21 = 7 D) 21n = 7