I have no air blowing out of the car. What do you think is the problem? on 2000 BMW 328i

It just happened today, but no air is coming out the car heat or air. What do you think it is?

Asked by for the 2000 BMW 328i
most likely the blower resistor or final stage for the
blower motor. let an independent BMW shop replace it for your, just to make sure.