Under the Rule of Reason, a U

Under the rule of reason, a U.S. firm with an 80 percent market share:​

A) will always be found in violation of the Sherman Antitrust Act.
B) will never be found in violation of the Sherman Antitrust Act.
C) may be found in violation of the Sherman Antitrust Act depending on its conduct.
D) will always be found in violation of the Sherman Antitrust Act if there is only one more firm in the industry.
E) will be found in violation of the Sherman Antitrust Act if there are other firms in the industry.