\[\left\{ {{\left( \frac{1}{3} \right)}^{-3}}-{{\left( \frac{1}{2} \right)}^{-3}} \right\}\div {{\left( \frac{1}{4} \right)}^{-3}}=?\]

• A.  \[\frac{19}{64}\]                               
• B.  \[\frac{64}{19}\]                   
• C.         \[\frac{27}{16}\]                   
• D.         \[\frac{16}{27}\]