a. How long, on average, does it take to complete the entire process for a group portrait? minutes. (Enter your response as an integer.) b. What single activity is the bottleneck for the entire process, assuming the process receives equal amounts of both groups and individuals? c. What is the capacity of the bottleneck per hour? The capacity of the bottleneck for individuals is customers and the capacity of the bottleneck for groups is groups. (Enter your responses as integers.)