Correct option is A
A polar plot of a sinusoidal transfer function is a graphical representation where the magnitude and phase angle of the transfer function are plotted in a polar coordinate system. This plot shows how the output of a system responds to a sinusoidal input at various frequencies.
In a polar plot:
The radius represents the magnitude of the transfer function.
The angle (measured from a reference direction, usually the positive real axis) represents the phase angle of the transfer function.
Therefore, the correct answer is:
(a) magnitude and phase angle
