Which statement best describes real power, reactive power, and apparent power in AC circuits?

• A. P is real power (kW) consumed; Q is reactive power (kVAR) due to energy storage; S is apparent power (kVA) vector sum; PF = P/S.
• B. P is real power; Q is apparent power; S is reactive power; PF = Q/P
• C. P is reactive power; Q is real power; S is apparent; PF = P/S
• D. P is apparent power; Q is real power; S is reactive; PF = P/S

Answer: (A)