At some instant, a motor car is moving on a circular path of radius $$600\,\text{m}$$, with a speed $$u = 30\,\text{m s}^{-1}$$. If its speed is increased at a rate of $$2\,\text{m s}^{-2}$$, the magnitude of the acceleration of the car at that instant is

A

$$2.0\,\text{m s}^{-2}$$

B

$$2.5\,\text{m s}^{-2}$$

C

$$3.5\,\text{m s}^{-2}$$

D

$$1.5\,\text{m s}^{-2}$$