E4A07 - Amateur Extra Class

E4A07 : Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge?
A Antenna analyzers automatically tune your antenna for resonance
B Antenna analyzers compute SWR and impedance automatically
C Antenna analyzers display a time-varying representation of the modulation envelope
D All these choices are correct
Correct Answer: Antenna analyzers compute SWR and impedance automatically