When making tea sets, there are 6 steps as shown in the table below: Time (in Step seconds Predecessor 15 B 10 A IC 16 A D 5 B, C E 10 D F 15 D The goal for each 6.5 hour shift is to complete 780 sets. a) What is the takt time? [Select] b) What is the theoretical minimum number of workstations? [Select ] c) After balancing, how many workstations did you need? [ Select) d) Based on improved cycle time (if possible, or takt time if not) what is the idle %? [ Select]