The sherman antitrust act (1890)

The Sherman Antitrust Act of 1890 was the first measure passed by the U.S. Congress to prohibit trusts. It was named for Senator John Sherman of Ohio, who was a chairman of the Senate finance committee and the Secretary of the Treasury under President Hayes. Several states had passed similar laws, but they were limited to intrastate businesses. The Sherman Antitrust Act was based on the constitutional power of Congress to regulate interstate commerce.

The answer is c) it has a lower cost to attend