Use the following information for the next 6 line balancing questions. Task Time (sec) Predecessor 80 None 20 40 None 10 I 60 B 70 B 30 E, F, D 90 G If the assembly line is running at a cycle time of 130 sec/unit and there are 5 workstations, what is the efficiency? O 77% O 47% O 71% O 62% O 59% O 83%