Which two statements accurately describe John Stuart Mill's views?

A. Mill argued for a quantitative approach to pleasure in his work "Utilitarianism."

B. In "On Liberty," Mill introduced the concept of the harm principle, emphasizing the limitation of the state's power over individuals.

C. Mill believed in restricting individual freedoms for the perceived benefit of society.

D. "The Subjection of Women" focuses on advocating modern roles for women in society.