What does the Economic Order Quantity $($EOQ$)$ model help determine?

A$)$ The optimal production schedule

B$)$ The ideal order quantity that minimizes total inventory costs

C$)$ The best supplier for raw materials

D$)$ The maximum storage capacity needed

Which quality management tool is used for identifying the root causes of defects?

A$)$ Control chart

B$)$ Fishbone diagram

C$)$ Pareto chart

D$)$ Histogram