If \({\left( {{x^3} + \frac{1}{{{x^3}}} - k} \right)^2} + {\left( {x + \frac{1}{x} - p} \right)^2} = 0,\) where k and p are real numbers and x ≠ 0, then k/p is equal to:

• A. p2 + 1
• B. p2 + 3
• C. p2 - 1
• D. p2 - 3