With reference to Simon Commission’s recommendations, which one of the following statements is correct?

The correct option is A because the Simon Commission, submitted in 1930, recommended the abolition of the system of diarchy introduced by the Government of India Act 1919. In its place, it proposed the establishment of representative governments in the provinces, commonly known as provincial autonomy. Under this recommendation, the distinction between reserved and transferred subjects was to be removed, and ministers were to be made responsible to the provincial legislatures. Regarding the other options, the commission suggested an inter-state council based on the federal principle rather than one under the Home Department. It did not suggest the abolition of the bicameral legislature at the Centre; rather, it recommended its continuation. While it discussed administrative services, the specific recommendation regarding discriminatory pay scales for British recruits in the Indian Police Service was not its primary constitutional proposal.