Nationlong Children's hospital has two types of surgeries: basic and complex. They have four operating rooms (you can view this as "workstations" or "machines"). The hospital is open 2,000 hours a year. Based on the data below, what is their capacity cushion? Complex surgery Basic surgery Annual patients (demand) 960 2,880 Processing time 2 1 (hr/patient) Average lot size 1 1 Standard setup time 0.75 hrs 0.25 hrs