Explanation:

The Cabinet Mission Plan of $1946$ was sent to India to facilitate the transfer of power from the British Raj to Indian leadership. Its key recommendations included: - (ii) The formulation of an Interim Government: This was to govern India until a new constitution was drafted. - (iii) The formulation of a constituent assembly: This body was tasked with drafting the Constitution of India. \nCrucially, the Cabinet Mission rejected the demand for a separate Pakistan, thus it did not recommend the partition of India. - Option A ((i) and (ii) only): This is incorrect because the Cabinet Mission did not recommend the partition of India. - Option B ((ii) and (iii) only): This is correct as the mission recommended both an interim government and a constituent assembly, while rejecting partition. - Option C ((i) and (iii) only): This is incorrect for the same reason as option A regarding partition. - Option D ((i), (ii) and (iii)): This is incorrect because the mission did not recommend the partition of India.