After $$1$$ comes $$3$$, after $$3$$ comes $$5$$, after $$5$$ comes $$7$$. What comes after $$7$$?  $$1$$~ ~ $$3$$~ ~ $$5$$~ ~ $$7$$~ ~ $$\cdots$$ 
选项为:A:$$2$$  B:$$4$$  C:$$7$$  D:$$8$$  E:$$9$$  请回答其中一个选项.