Appeared in: 2025 (3 sets)
If the rate of change of volume of a sphere is twice the rate of change of its radius, then the surface area of the sphere is :
(A) $1 \text{ sq unit}$
(B) $2 \text{ sq units}$
(C) $3 \text{ sq units}$
(D) $4 \text{ sq units}$