Ture or False:
1. An LP formulation must have at least one constraint but no limit on number of objective functions.
2. It is not possible to have both hiring cost and firing cost in the same period.
3. A super bill is an example of planning bill of material.
4. An MPS is frozen in the period between the demanf fence and the planning fence.
5. There is no restriction of changes in MPS beyond the planning fence.