If the correct time now is $$1:15$$ P.M., and if my clock stopped running three and one-half hours ago, when did it stop running? 
选项为:A:$$8:45$$ A.M.  B:$$9:45$$ A.M.  C:$$10:45$$ A.M.  D:$$4:45$$ P.M.  请回答其中一个选项.