The Allocation of Supply Sources and Markets to Facilities Should

The allocation of supply sources and markets to facilities should be reconsidered on a regular basis so that

A) the allocation can be held constant as market conditions or plant capacities expand.
B) the allocation can be changed as market conditions or plant capacities stagnate.
C) the allocation can be held constant as market conditions or plant capacities change.
D) the allocation can be changed as market conditions or plant capacities change.
E) none of the above