Solve the Equation $8 r^{2}=4 r$ A) 0
B) 0,2
C) $0, \frac{1}{2}$

Solve the equation.
- $8 r^{2}=4 r$

A) 0
B) 0,2
C) $0, \frac{1}{2}$
D) $\frac{1}{2}$