The correct option is B: (i) and (ii) only.

Explanation:

The Rowlatt Act, also known as the Anarchical and Revolutionary Crimes Act, was a law passed by the British Indian government in 1919. The law gave the government sweeping powers to arrest and imprison individuals without trial, and to suppress political dissent. The act was passed based on the recommendation of the Sedition Committee, which was appointed by the British Indian government to investigate and make recommendations on the growing Indian nationalist movement.

During the Rowlatt Satyagraha, Mahatma Gandhi tried to use the Home Rule League, which was an organization that sought self-government for India within the British Empire. Gandhi believed that by working within the existing political framework, he could achieve greater success in his campaign for Indian independence.

The Simon Commission, which was appointed by the British government to recommend constitutional reforms in India, arrived in India in 1928. The commission did not include any Indian members, which sparked protests and demonstrations throughout the country. While the Simon Commission protests did coincide with the Rowlatt Satyagraha, they were separate events with different objectives.

Therefore, the correct option is B: (i) and (ii) only.