The figure shows the variation of capacitive reactance ($X_C$) of two ideal capacitors of capacitances $C_1$ \& $C_2$ with the reciprocal of angular frequency ($1/\omega$) of ac source. The value of $C_1/C_2$ is (A) $\frac{1}{2}$ (B) $2$ (C) $\sqrt{3}$ (D) $\frac{1}{\sqrt{3}}$