A body of mass 5 kg accelerates at a constant rate of 2 m/s$$^2$$ on a smooth horizontal surface due to an external force acting at $$30^\circ$$ with horizontal. The magnitude of the force is

A

$$10 \cos 30 N$$

B

$$10 \sin 30 N$$

C

$$\frac{10}{\cos 30}N$$ 

D

$$\frac{10}{\sin 30}N$$