Three forces $$F_1 = 10$$ N, $$F_2 = 8$$ N, $$F_3 = 6$$ N are acting on a particle of mass 5 kg. The forces $$F_2$$ and $$F_3$$ are applied perpendicularly so that particle remains at rest. If the force $$F_1$$ is removed, then the acceleration of the particle is

A

$$7$$ m s$$^{-2}$$

B

$$0.5$$ m s$$^{-2}$$

C

$$4.8$$ m s$$^{-2}$$

D

$$2$$ m s$$^{-2}$$