A given end item, Gamma, has MPS start quantities as follows: 150 units in week 3 150 units in week 5 This item's indented bill of materials is as follows: Gamma A (2) B (4) C(2) For A, there are currently 150 units on-hand. Lead time is 1 week, and the order policy is to order in whole multiples of 150 units. There are no scheduled receipts. There are no safety stock requirements. For B, there are currently 0 units on-hand. Lead time is 2 weeks, and the order policy is to order in whole multiples of 1,000 units. There is a scheduled receipt of 1,000 units in Week 2. There are no safety stock requirements. For C, there are currently 1,000 units on-hand. Lead time is 3 weeks, and the order policy is to order in whole multiples of 1,000 units. There is a scheduled receipt of 1,000 units in Week 1. There are no safety stock requirements. How many planned releases for B are necessary? When B's material plan is complete, what is the on-hand availability for B in Week 4? When C's material plan is complete, what is the on-hand availability for C in Week 1? Which of these exception messages for C would be most appropriate? Expedite the scheduled receipt for Week 1 to Week o Defer the scheduled receipt for Week 1 to Week 2. Change the quantity of the scheduled receipt for Week 1 to 2,000 units Release an order for 1,000 units in Week 3