若$$a\textgreater b$$，则（~ ）．
选项为:A:$$\frac{1}{a}\textless\frac{1}{b}$$  B:$$-a\textless-b$$  C:$$\left\textbar{} a \right\textbar\textgreater\left\textbar{} b \right\textbar$$  D:$${{a}^{2}}\textgreater{{b}^{2}}$$  请回答其中一个选项.