Two masses m₁ and m₂ are connected to the ends of a massless string that passes over a pulley fixed at the top of a double incline as shown. Assuming m₁ > m₂, acceleration of the system is:

• A

  $\frac{{\mathrm{m}}_1{\mathrm{gsin\theta }}_1+{\mathrm{m}}_2{\mathrm{gsin\theta }}_2}{{\mathrm{m}}_1+{\mathrm{m}}_2}$

• B

  $\frac{{\mathrm{m}}_1{\mathrm{gsin\theta }}_1-{\mathrm{m}}_2{\mathrm{gsin\theta }}_2}{{\mathrm{m}}_1-{\mathrm{m}}_2}$

• C

  $\frac{{\mathrm{m}}_1{\mathrm{gsin\theta }}_1-{\mathrm{m}}_2{\mathrm{gsin\theta }}_2}{{\mathrm{m}}_1+{\mathrm{m}}_2}$

• D

  $\frac{\left({\mathrm{m}}_1+{\mathrm{m}}_2\right)\left({\mathrm{sin\theta }}_1+{\mathrm{sin\theta }}_2\right)\mathrm{g}}{{\mathrm{m}}_1-{\mathrm{m}}_2}$