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Question
| Quantity of Clean Air (%) | Marginal Cost ($) | Marginal Benefit ($) |
| 0 | 10,000 | 100,000 |
| 25 | 25,000 | 50,000 |
| 50 | 37,500 | 37,500 |
| 75 | 75,000 | 25,000 |
| 100 | Infinite | 0 |
In the above table, the optimal quantity of clean air is
A) 25 percent.
B) 50 percent.
C) 75 percent.
D) 100 percent.
Answer
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