please solve

In Canada, changes in legislation such as allowing same sex marriage, creating equal pay legislation or not forcing a woman to give up her property for her husband's debts tend to A) be introduced in Ontario, then spread to other provinces and finally get passed as national laws. (B) be introduced in Quebec, then Ontario, then Canada. (C) be passed first by the federal government who are in charge of the whole country, then be implemented in different provinces. D) be passed without anyone opposing them