To find the real solution(s) of the equation
\[ p^3 = 125, \]
we start by taking the cube root of both sides.
The cube root of 125 is
\[ \sqrt[3]{125} = 5. \]
Thus, the equation
\[ p^3 = 125 \]
has the solution
\[ p = 5. \]
Now, we review the choices provided:
- (Choice A) \(p = 3\) — This is not a solution.
- (Choice B) \(p = -3\) — This is not a solution.
- (Choice C) \(p = 6\) — This is not a solution.
- (Choice D) \(p = -6\) — This is not a solution.
- (Choice E) None of the above — This is the correct choice since \(p = 5\) is not listed.
Therefore, the correct answer is
\[ \text{(Choice E) None of the above.} \]