Use the following to answer question:
Figure: Efficiency and Pollution 
-(Figure: Efficiency and Pollution) Use Figure: Efficiency and Pollution.Assume that firms are the only beneficiaries of pollution and that costs are borne solely by others in the society.An optimal Pigouvian tax of _____ per ton of pollution can move this market to the socially optimal quantity of pollution.
Definitions:
Managing Customer Expectations
The process of understanding, influencing, and fulfilling the anticipated needs and perceptions of customers.
Product Performance
The evaluation of how effectively a product meets its intended purpose and satisfies customer needs.
Unrealistic Expectations
Expectations that are unreasonable or unattainable given the current circumstances or resources available.
Utmost Quality
The highest standard or level of excellence that a product, service, or process can achieve.
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