A part requires three processing steps on two machines in the sequence A-B-A. The demand for this part is 24,000 units every four weeks. The company operates five days per week, 16 hours per day, and the company performing maintenance activities for all machines for three hours twice a week. Given the following performance data.

Operation	Machine	Standard Time	Efficiency	Reliability	Defects
1	A	4 min	99%	96%	4%
2	B	5 min	98%	95%	6%
3	A	6 min	97%	94%	4%

(Select the correct answer from the dropdown menue) a- The number of parts to start operation 1 = unit b- The number of parts to start operation 2 = unit c- The number of parts to start operation 3 = unit d- The total time of maintenance (for 4 weeks) = min e -The amount of available time = min f- The number of machines required for operation 1 = 3 machine g- The number of machines required for operation 2 = machine h- The number of machines required for operation 3 = machine i- The total number of machine A required for production = machine j- The total number of machine B required for production = machine