The correct options are
A The fate of North West Frontier Province and Sylhet district of Assam was to be decided by a referendum.
C A boundary commission to be set up in case of partition.
D Sindh was to take its own decision.
The Mountbatten plan also known as the Independent India Act of 1947 had the following clauses: 1. Sindh was to take its own decision. 2.A boundary commission to be set up in case of partition. 3. The fate of North-West Frontier Province and Sylhet district of Assam was to be decided by a referendum.