Determine If the Function Is a Power Function $$\mathrm { S } = 4 \pi \mathrm { r } ^ { 2 }$$

Multiple Choice

Determine if the function is a power function. If it is, then state the power and constant of variation.
- $$\mathrm { S } = 4 \pi \mathrm { r } ^ { 2 }$$

A) Power is $4 \pi$ ; constant of variation is 2
B) Power is 2; constant of variation is $4 \pi$
C) Power is 2; constant of variation is 4
D) Not a power function