In the long run, a year-long drought that destroys most of the summer's wheat crops causes permanently:

The above table shows the marginal benefits and costs from production of fertilizer. There are no external benefits. If the market is perfectly competitive and unregulated, at the equilibrium level of output, the marginal external cost per ton is

A) zero. B) $30. C) $80. D) $110.

Which of the following would likely be involved in a new bond offering?

A) a commercial bank B) an investment bank C) a broker D) a dealer