The three firms below have five choices for pollution control: no controls or four different technologies,W,X,Y and Z.The amount of pollution emitted and the cost of the technologies are shown in the table. 
-Refer to the information above.Suppose that the government requires the three firms to reduce pollution by 25% from the no-control level.Pollution reduction process __________ will be chosen and will result in a total cost of __________.
Definitions:
Common Carrier
A company that transports goods or persons for compensation and offers its facilities to the general public without discrimination. Compare contract carrier.
Rare Books
Books considered to be of great value due to their age, historical significance, rarity, or collectible features.
Will
A legal document that states a person's wishes regarding the distribution of their property after death.
Library
A collection of sources of information and similar resources, made accessible to a defined community for reference or borrowing.
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