In Aggregate Planning Models,which of the Following Statements Are Correct

Multiple Choice

In aggregate planning models,which of the following statements are correct?

A) The number of workers available influences the possible production levels.
B) We allow the workforce level to be modified each month through the hiring and firing of workers.
C) We eventually allow demand to be backlogged; that is,demand need not be met on time.
D) All of these choices are correct.