There Are 50 Units in Inventory at the Start of Week

There are 50 units in inventory at the start of week 1 for this company,which runs a lot-for-lot MRP system.There is a one week lead time for all shipping and production quantities regardless of volume.What are the quantities of the planned order releases for this item for the first six weeks?

A) 20, 30, 0, 40, 20, 0
B) 35, 0, 60, 0, 0, 0
C) 5, 30, 0, 40, 20, 0
D) 35, 0, 0, 40, 20, 0