c$)$ Given company conditions as described, which of the following statements is true?A$.$The approach in part $($a$)$ is completely uncompetitive compared to part $($b$).$B$.$If shortages truly do not cost anything, then the company should always round up its required number of workers.C$.$If shortages truly do not cost anything, then the company should always produce short and make it up in subsequent periods.D$.$A clearly better approach with an "overtime$-$only" strategy would have been to hire fewer workers at the start to have less regular production and more overtime production every period.