Consider again the example of the three step airport security. The first step, verifying ID and boarding pass, takes 30 seconds per passenger. The second step, searching the passenger for metal objects using a metal detector, takes 10 seconds per passenger. The third step, running the carry on luggage through an X-ray machine, takes 60 seconds per passenger. Assume that there are many customers waiting in the process. Which resource is the bottleneck? Third step (x ray machine) None of these First step (verifying ID and boarding pass) Second step (metal detector)