A bread-making factory has the production process shown in the figure below. There are five operations in sequence. The product only needs to go through one of the parallel machines in each case where parallel machines exist. Proof 60 min./batch Mix Bake Pack 40 min./batch 50 min/batch 60 min./batch Proof 60 min./batch Cut 35 min./batch Mix Bake 60 min./batch Pack 40 min./batch 50 min/batch - Proof 60 min./batch a. What is the bottleneck of the process? Select] b. What is the time of the bottleneck? (Select ] c. What is the throughput of the process? Select] d. What is the weekly capacity if the company operates 24 hours a day 6 days a week? (Select]