A turn table which is rotating uniformly has a particle placed on it. As seen from the ground, the particle goes in a circle with speed 20 `cm//s` and acceleration 20 `cm//s^2`. The particle is now shifted to a new position where radius is half of the original value . the new values of speed and acceleration will be

Options

A. `10 cm/s, 10 cm/s^2`
B. `10 cm/s, 80 cm/s^2`
C. ` 40 cm/s, 10 cm/s^2`
D. ` 40 cm/s, 40 cm/s^2`