Consider the following characteristics of assembly line balancing:
1. Apportionment of sequential work activities into work stations
2. High utilization of equipment
3. Minimization of idle time
Which of the statements given above are correct?
(a) 1, 2 and 3 (b) 1 and 2 only
(c) 2 and 3 only (d) 1 and 3 only