What is the value of \[\left( {{8}^{-25}}-{{8}^{-26}} \right)\] ?

• A.  \[7\times {{8}^{-25}}\]                                 
• B.  \[8\times {{8}^{-26}}\] 
• C.         \[7\times {{8}^{-26}}\]                 
• D.         \[8\times {{8}^{-25}}\]