John and Ali start counting on from $$0$$.  They each count on in steps of a different size.  The first number that John and Ali both reach is $$120$$.  What size steps could they have been counting in? 
选项为:A:$$10$$ and $$12$$  B:$$11$$ and $$13$$  C:$$9$$ and $$14$$  D:$$8$$ and $$15$$  E:$$6$$ and $$20$$  请回答其中一个选项.