In a very popular Chinese restaurant, all seats were filled and there were still $$8$$ customers in line outside the door. After some time, $$11$$ customers finish eating and leave the restaurant, and then $$15$$ more customers join the waiting line. How many people are still in line outside the door? 
选项为:A:$$0$$  B:$$12$$  C:$$15$$  D:$$18$$  E:$$23$$  请回答其中一个选项.