Find all critical points and domain endpoints for the function $y=x^3-192\sqrt{x}$.

Domain: $[4,\infty )$

Critical points: $x=0$, $x=4$

Domain: $[0, \(\infty\))$

Critical points: $x=0$, $x=4$

Domain: $[4,\(\infty\))$

Critical point: $x=4$

Domain: $[0,\infty )$

Critical point: $x=0$