engine idle help me

my 02 camaro idles rough when a/c is on what do i do?

maybe vibation from the A/C Compressor itself, if it is low on frigen!
or a damage inside the compressor.....

other option:
hook up a scanner to see if the ECM has a signal from the A/C to raise the engine speed.... if not, the idle drops under the load of the A/C