A body of mass 2 kg begins to move under the action of a time dependent force given by $$\vec{F} = (6t)\hat{i} + (6t^2)\hat{j}$$ N. The power developed by the force at the time $$t$$ is given by:

A

$$(6t^4 + 9t^5)$$ W

B

$$(3t^3 + 6t^5)$$ W

C

$$(9t^5 + 6t^3)$$ W

D

$$(9t^3 + 6t^5)$$ W