Which of the following markets are competitive enough to be treated as perfectly competitive?

A) Agricultural markets
B) Copper
C) The U.S. airline industry
D) Coal, iron, tin and lumber
E) all of the above

Perfectly Competitive

A market structure characterized by many buyers and sellers, where each has negligible influence on the market price of homogeneous products.

U.S. Airline Industry

A sector that encompasses all airlines operating within the United States, including domestic and international carriers.

Agricultural Markets

Marketplaces where agricultural products, including crops and livestock, are bought and sold, often influenced by seasonal cycles and global demand.