Qno 12

​Q12. Coefficient of x²⁹ in the polynomial

               $\left(\mathrm{x} -\frac{1}{1 \times 3}\right)\left(\mathrm{x} -\frac{2}{1 \times 3\times 5}\right) \left(\mathrm{x}-\frac{3}{1 \times 3 \times 5 \times 7}\right) .......\left(\frac{30}{1 \times 3 \times .....\times 61}\right)$ is

     $$\begin{gathered} \left(\mathrm{A}\right) \frac{1}{2} \left(1 -\frac{1}{1 \times 3\times .....\times 61}\right) \left(\mathrm{B}\right) \frac{1}{2} +\frac{1}{1 \times 3\times .....\times 61} \\ \left(\mathrm{C}\right)- \frac{1}{2} \left(1 -\frac{1}{1 \times 3\times .....\times 61}\right) \left(\mathrm{D}\right) \frac{29}{1 \times 3 \times .....\times 61} \end{gathered}$$