During the industrialization of the early 1900s, many businessmen attempted to create monopolies within their respective markets. Which of these describes a monopoly?

A.
only one seller possesses a good desired in the market
B.
exclusive ownership rights are granted for an invention
C.
a combination of companies are controlled by a central board
D.
business owners sell stock and raise large amounts of capital

A. only one seller possesses a good desired in the market