Solve the Proportion $\frac { 2 } { c } = \frac { c - 4 } { 6 }$

Multiple Choice

Solve the proportion. $\frac { 2 } { c } = \frac { c - 4 } { 6 }$

A) $c = 6 , c = - 2$
B) $c = 2 , c = - 3$
C) c=-3
D) c=-2
E) no solution