The correct options are
A Partition of India and creation of two independent dominions of India and Pakistan.
B The Princely States would be free to join either India or Pakistan.
D Setting up a Boundary Commission to settle the boundaries of the two dominions of India and Pakistan.
The Mountbatten Plan had several clauses. It included the Partition of India into two independent dominions of India and Pakistan. The Princely States would be free to join India or Pakistan. A Boundary Commission would be set up to settle the issue of boundaries between the two dominions of India and Pakistan. Finally, the two dominions would draft their own Constitution and elect their Constituent Assemblies.