Which of the Following Is True of Sole Proprietorships in the United

Which of the following is true of sole proprietorships in the United States?

A) They are the most important form of business organization in terms of their numbers.
B) They are responsible for a large portion of the total production of goods and services in the U.S. economy.
C) They offer the owners less personal liability than the other forms of business organization.
D) There are no opportunity costs involved in operating such firms.
E) Such firms employ only one individual.