Which of the following statements about Cabinet Mission are correct ? 1. It was sent to India in 1946 to negotiate the transfer of power with the Indian leaders. 2. It proposed a two-tiered federal plan while conceding the largest measure of regional autonomy. 3. There was to be a federation of provinces and states, alongside a federal centre. 4. The individual provinces were allowed to form regional unions to which they could surrender some of their powers by mutual agreement. Select the answer using the code given below :