Which of the following is not true of mineral resources in the United States?

Which of the following is not true of mineral resources in the United States?

A.The United States has large deposits of coal, iron ore, natural gas, and petroleum.

B.The United States does not have to import any minerals from other countries.

C.Mineral resources of the United States are well developed.

D.Major mineral resources that are scarce in the United States are tin, manganese, and nickel.

正确答案是B