Supreme Court rules, northern securities in violation of Sherman antitrust act

Use this headline to answer the question
Which statement best explains the significance of the newspaper headline
A the ruling provided a legal basis for strengthening labor unions
B the ruling led to better conditions for northern securities work
C the ruling was the first time the Sherman antitrust act was used to break up a trust
D the ruling was a victory for owners of railroad companies

C the ruling was the first time the Sherman antitrust act was used to break up a trust