A Canadian-based company has a long-term contract with a US-based supplier. The Canadian company has been experiencing short shipments and variations of the supply lead time with the US supplier for a few months. Which of the following is the most appropriate action for the master production scheduler in this situation?
A. sk the purchasing manager to work with the supplier to improve their shipping quantity accuracy and lead time stability
B. sk the purchasing manager to terminate the contract with this supplier, and look for a better supplier
C. pply safety stock and safety lead time while planning the master production schedule
D. pply safety lead time according to the target service level while planning the master production schedule