Gary manufactures solar-powered automobiles. he has been having difficulties controlling his inventory. he has experienced inventory shortages and inventory overages. he has considered several alternatives to address these issues but is uncertain which one would be most effective. which of the following would be most effective in alleviating the inventory issues he is experiencing?
a. he could use materials requirements planning.
b. he could hire an inventory specialist to track the inventory.
c. he could use a just-in-time production system.
d. he could set a more effective planning horizon.