$85)$ Two different approaches to load work centres in job scheduling are:

A$)$ economic order quantity $($EOQ$)$ and material requirements planning $($MRP$).$

B$)$ Gantt charts and shop$-$floor control.

C$)$ infinite loading and finite loading.

D$)$ linear programming and trial$-$and$-$error.

E$)$ linear programming and Gantt charts.