Determine All Critical Points for the Function $$y = 4 x ^ { 2 } - 128 \sqrt { x }$$

Multiple Choice

Determine all critical points for the function.
- $$y = 4 x ^ { 2 } - 128 \sqrt { x }$$

A) x = 0
B) x = 4
C) x = 0, x = 4, and x = -4
D) x = 0 and x = 4