Which of the following statements about Materials Requirements Planning (MRP) is TRUE?
a. Purchasing orders are inputs to the MRP system.
b. MRP explosion occurs when the system is bombarded with too many orders to schedule at one time.
c. MRP gross requirements for a parent item are equal to the planned order releases of its components.
d. Among the four core processes of an organization that link activities within and across firms in a supply chain, the MRP interacts with all of them either through its inputs or outputs.