Which formula represents reactive power as Q = I^2 × X with X = X_L − X_C?

Which formula represents reactive power as Q = I^2 × X with X = X_L − X_C?

• A. Q = V × I × sin φ.
• B. Q = V × I × cos φ.
• C. Q = I^2 × X, with X = X_L − X_C.
• D. Q = P × tan φ.

Answer: (C)