Correct Option: B

Labour Party was in power in UK when India got Independence. The post-war Labour government in Britain was committed to independence for India. A second mission was sent to India by Prime Minister Attlee in 1946 for the preparation of independence. On 16 May, this Cabinet Mission published a plan for transferring power to a united India, but over subsequent months it became clear that this plan would fail. The British Government, therefore, began to draw up alternative plans. It also appointed a new Viceroy Lord Mountbatten to take over from Lord Wavell who had failed to get the Indian parties to agree on any plan. In June 1947, Mountbatten announced that Independence would come at Midnight on 14 August 1947.