A Stone Is Thrown into a Pond, Creating a Circular $\pi$

Multiple Choice

A stone is thrown into a pond, creating a circular wave whose radius increases at the rate of 1 foot per second. In square feet per second, how fast is the area of the circular ripple increasing 3 seconds after the stone hits the water?

A) $\pi$
B) 2 $\pi$
C) $\frac { \pi } { 3 }$
D) 6 $\pi$
E) 3 $\pi$
F) $\frac { \pi } { 6 }$
G) $\frac { \pi } { 12 }$
H) $\frac { \pi } { 2 }$