Which of the followings is true?

A$.$ For FM$,$ a sinusoidal phase deviation and a frequency deviation constant can be deployed to compute the message.

B$.$ For PM$,$ a sinusoidal phase deviation can be deployed to compute the message.

C$.$ For PM$,$ a sinusoidal phase deviation and a frequency deviation constant can be deployed to compute the message.

D$.$ For PM$,$ a phase deviation constant can be deployed to compute the message.