Effect on the deviation d of an FM signal when it is passed through a mixer

What is the effect on the deviation d of an FM signal when it is passed through a mixer?

Options:

a) Doubles
b) Reduces
C) Becomes half
d) Remains unchanged

Correct Answer :Remains unchanged

Explanation:

When a carrier is Frequency modulated, the output signal has the frequency deviated above and below the carrier frequency, this is known as Deviation.When the FM signal is passed through a mixer, the mixer changes the carrier frequency but the deviation remains unchanged.