10. Some goods can be either common resources or public goods depending on
(A) whether the good is rival in consumption.
(B) whether the good is excludable.
(C) the marginal cost of the goo
(D)
(D) None of the above is correct.

Table 1

The following table presents the total tax liability for an unmarried taxpayer under four different tax schedules for the income levels shown.

Amount of Tax Due

| Income | Tax Schedule A | Tax Schedule B | Tax Schedule C | Tax Schedule D |
| | | | | |
| $50,000 | $10,000 | $20,000 | $17,500 | $15,000 |
| $100,000 | $30,000 | $30,000 | $25,000 | $30,000 |
| $200,000 | $80,000 | $40,000 | $30,000 | $60,000 |

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