Bert has $7$ dollars. He is going to buy $4$ cupcakes which cost $80$ cents each and a certain number of~ candies which cost $40$ cents each. How many basketballs at most can he buy? 
选项为:A:$$6$$  B:$$7$$  C:$$8$$  D:$$9$$  E:$$11$$  请回答其中一个选项.