The correct option is B The Interim Government
As per the cabinet Mission, the power would be first transferred to Interim Government. The interim government was formed on September 2, 1946 from the newly elected Constituent Assembly with the powers of a prime minister bestowed on the vice-president of the Council, Jawaharlal Nehru. It was in place till 15th August 1947, when the nations of Indian and Pakistan received Independence from colonial rule