Light Bulb A lights up every $$15$$ minutes while Light Bulb B lights up every $$20$$ minutes. Both light bulbs lit up at the same time at $$8.30$$ a.m.  By noon, how many more times would both light bulbs have lit up at the same time? 
选项为:A:$$2$$  B:$$3$$  C:$$4$$  D:$$5$$  请回答其中一个选项.