若$$a=(\frac{-3.14}{3.13})\div 3.12$$，$$b=(\frac{2.14}{-2.13})\div 2.12$$，$$c=(\frac{1.14}{1.13})\div (-1.12)$$，则$$a$$，$$b$$，$$c$$的大小关系是（~ ）．
选项为:A:$$a\textgreater b\textgreater c$$  B:$$a\textgreater c\textgreater b$$  C:$$b\textgreater c\textgreater a$$  D:$$c\textgreater b\textgreater a$$  请回答其中一个选项.