$3.$ The Netherlands are a major producer of grains, such as wheat, corn, and rice. In $2008$

the Dutch government, concerned that grain exports were driving up food prices for

domestic consumers, imposed a tax on grain exports.

a$.$ Draw the graph that describes the market for grain in an exporting country. Use this

graph as the starting point to answer the following questions.

b$.$ How does an export tax affect domestic grain prices PD$?$

c$.$ How does it affect the welfare of domestic consumers, the welfare of domestic

producers, and government revenue?

d$.$ What happens to total welfare in the Netherlands, as measured by the sum of

consumer surplus, producer surplus, and tax revenue? What is the size of the

deadweight loss?