Find All Real Solutions of the Equation $8 x ^ { 2 / 3 } - 250 = 6 + 4 x ^ { 2 / 3 }$

Multiple Choice

Find all real solutions of the equation. $8 x ^ { 2 / 3 } - 250 = 6 + 4 x ^ { 2 / 3 }$

A) $64$
B) $\pm 64$
C) $256$
D) $\pm 512$
E) No real solution