_ $$\eqalign{ & \left( {\frac{1}{2} - \frac{1}{4} + \frac{1}{5} - \frac{1}{6}} \right) \cr & \,{\text{is divided by}} \cr & \left( {\frac{2}{3} - \frac{5}{9} + \frac{3}{5} - \frac{7}{{18}}} \right)\,{\text{,}} \cr & {\text{then the result is = ?}} \cr} $$$?

• A. 5 1/10
• B. 2 1/18
• C. 3 1/6
• D. 3 3/10