In an MRP table, the gross requirement in period 7 is 50 units. There are 15 units on hand at the end of period 6, and no units are scheduled to be received in period 7. Lead time is 2 periods. Assuming lot for lot ordering, which of these would be the proper output of the MRP system?
1. Planned order receipt of 35 units in period 5
2. Planned order release of 35 units in period 5
3. Planned order receipt of 50 units in period 5
4. Planned order release of 50 units in period 5