$9)$ Plants A$,$ B$,$ C$,$ and D produce the same item that is demanded by customers W$,$ X$,$ Y$,$ and Z$.$

Customer demand and plant capacity are shown in the bottom row and rightmost column in the

table. The cost to ship one unit between each combination of plants and customers is also shown in

the table. The corporation wishes to minimize the total transportation costs of this assignment

problem. Use the table to answer the following question.

W X Y Z Total Supply

A $$3$ $$6$ $$4$ $$232,000$

B $$7$ $$10$ $$8$ $$619,000$

C $$10$ $$13$ $$11$ $$914,000$

D $$12$ $$15$ $$13$ $$1115,000$

Total Demand $25,00015,00018,00012,000$

Which of these can be an appropriate constraint for a transportation model developed for this

business problem?

A$)$ Minimize Z $=3$ SAW $+7$ SBW $+10$ Scw $+12$ SDW

B$)$ SAW $+$ SAX $+$ SAY $+$ SAZ $<=22,000$

C$)$ SAW $+$ SBW $+$ SCW $+$ SDW $>=25,000$

D$)$ Maximize Z $=3$ SAW $+7$ SBW $+10$ Scw $+12$ SDW