I am thinking of two numbers. Their common factors are only $$1$$ and $$2$$. Their first (lowest) common multiple is $$12$$. If one of the numbers is $$6$$, what is the other number? 
选项为:A:$$2$$  B:$$3$$  C:$$4$$  D:$$8$$  E:$$12$$  请回答其中一个选项.