belts on a 93 RX7???

how many belts are on the 3rd generation RX7s... im hearing a few different stories... I have A/C but Im told the power steering belt will work with the A/C so only 2 belts are needed (Alternator and Power Steering). Is this correct? every parts site I check lists a 3rd belt for the A/C... whats the deal?? thanks