设$$a=\dfrac{19961995}{1995}$$，$$b=\dfrac{19951996}{1996}$$，$$c=\dfrac{19951996}{1995}$$，$$d=\dfrac{19961995}{1996}$$，则下列不等关系中成立的是（ ~）．
选项为:A:$$a\textgreater b\textgreater c\textgreater d$$  B:$$c\textgreater a\textgreater d\textgreater b$$  C:$$a\textgreater d\textgreater c\textgreater b$$  D:$$a\textgreater c\textgreater d\textgreater b$$  请回答其中一个选项.