For a U.S. corporation with income above $20 million, the average tax rate is:

a. less than the marginal tax rate.

b. equal to the marginal tax rate.

c. greater than the marginal tax rate.

d. none of the above.

For a U.S. corporation with income above $20 million, the average tax rate is: less than the marginal tax rate. equal to the marginal tax rate. greater than the marginal tax rate. none of the above