A worker's marginal revenue product depends upon his average product

All of the following occur whenever a government taxes a product except

A) the quantity consumed of that product falls. B) the price of that product rises. C) there will be no excess burden if the government's tax revenue is sufficiently large to offset the deadweight loss. D) the marginal benefit of the last unit sold exceeds the marginal cost of producing it.

Using the above figure, which of the lines in the above diagram represents a regressive tax?

A) A B) B C) C D) none of them