Two particles A, B are moving on two concentric circles of radii $$R_1$$ and $$R_2$$ with equal angular speed $$\omega$$. At $$t = 0$$, their positions and direction of motion are shown in the figure. The relative velocity $$\vec{V_A} - \vec{V_B}$$ at $$t = \frac{\pi}{2\omega}$$ is given by:

A

$$\omega(R_1 + R_2)\hat{i}$$

B

$$-\omega(R_1 + R_2)\hat{i}$$

C

$$\omega(R_1 - R_2)\hat{i}$$

D

$$\omega(R_2 - R_1)\hat{i}$$