Write the Statement as a Power Function Equation $\mathrm { A } = \mathrm { k } ^ { 2 } \mathrm {~s}$

Multiple Choice

Write the statement as a power function equation. Use k as the constant of variation.
-The area of an equilateral triangle varies directly as the square of the side s.

A) $\mathrm { A } = \mathrm { k } ^ { 2 } \mathrm {~s}$
B) $\mathrm { A } = \frac { \mathrm { s } ^ { 2 } } { \mathrm { k } }$
C) $A = k ^ { 2 }$
D) $A = \frac { k } { s ^ { 2 } }$