Use the following to answer question:
Figure: MSB and MSC of Pollution 
-(Figure: MSB and MSC of Pollution) Use Figure: MSB and MSC of Pollution.Assume that firms are the only beneficiaries of pollution and that costs are borne solely by others in the society.What level of pollution represents the socially optimal level?
Definitions:
Left Ventricle
The chamber of the heart that receives oxygenated blood from the left atrium and pumps it out under high pressure through the aorta to the systemic circulation.
Aorta
Large artery that receives oxygenated blood pumped out of the heart’s left ventricle.
Pulmonary Circuit
The pathway of blood flow between the heart and lungs where carbon dioxide is exchanged for oxygen.
Red Blood Cells
The cells in the blood responsible for carrying oxygen from the lungs to the body tissues and carbon dioxide back to the lungs.
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