E5B03 - Amateur Extra Class

E5B03 : How is impedance in polar form converted to an equivalent admittance?
A Take the reciprocal of the angle and change the sign of the magnitude
B Take the reciprocal of the magnitude and change the sign of the angle
C Take the square root of the magnitude and add 180 degrees to the angle
D Square the magnitude and subtract 90 degrees from the angle
Correct Answer: Take the reciprocal of the magnitude and change the sign of the angle