All of the following are examples of goods for which external costs commonly exist EXCEPT

Which of the following results in an increase in the supply of a good or service?

A) a rise in the price of the good or service B) an increase in foreign imports of the good or service C) a fall in the price of the good or service D) a smaller number of sellers producing the good or service E) higher taxes imposed upon producers of the good or service

Which of the following is not a result of imposing a rent ceiling?

A) There is a reduction in the quantity of apartments supplied. B) The marginal benefit of the last apartment rented is greater than the marginal cost of supplying it. C) There is an increase in the quantity of apartments demanded. D) Some consumer surplus is converted to producer surplus.