In a jar of red, green, and blue marbles, all but $$6$$ are red marbles, all but $$8$$ are green, and all but $$4$$ are blue. How many marbles are in the jar? 
选项为:A:$$6$$  B:$$8$$  C:$$9$$  D:$$10$$  E:$$12$$  请回答其中一个选项.