Spherical Balloon Related Rates

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The volume of a spherical balloon is increasing at a constant rate of 36π cubic inches per minute. At what rate is the surface area of the balloon increasing, in square inches per minute, when the radius is 6 inches? (The volume of a sphere with radius $r$ is $V = \displaystyle\frac{4}{3}\pi r^3$ and the surface area is $A = 4\pi r^2$ .)

$144\pi$

$12\pi$

$\displaystyle \frac{\pi}{2}$

$6\pi$

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