\frac{6}{{5 - \frac{5}{3}}} \div \frac{{4 - \frac{2}{{4 - \frac{1}{2}}}}}{{5 - \frac{3}{2}}} - \frac{2}{5}\,of\,\left\{ {\frac{6}{9} + \frac{2}{3}of\frac{1}{2}} \right\} = ?$$

• A. 1 1/3
• B. 2 13/49
• C. 1 7/16
• D. 2 3/5