E4E04 - Amateur Extra Class

E4E04 : How can conducted noise from an automobile battery charging system be suppressed?
A By installing filter capacitors in series with the alternator leads
B By installing a noise suppression resistor and a blocking capacitor at the battery
C By installing a high-pass filter in series with the radios power lead and a low-pass filter in parallel with the antenna feed line
D By installing ferrite chokes on the charging system leads
Correct Answer: By installing ferrite chokes on the charging system leads