What does the space angle in the equation Fr( ,t)=3/2Fmcos( - t) for MMF produced when 3-phase balanced windings excited by three phase balanced currents represent?

• A. MMF wave at any moment is sinusoidally distributed in space
• B. Entire MMF waveform is travelling at (constant angular speed) synchronous speed
• C. MMF wave is of constant amplitude
• D. None of the mentioned