Explanation:

Both statements are incorrect.

• The Poona Pact was signed on September 24 by 23 people. Madan Mohan Malaviya signed it on behalf of Hindus and Gandhi, and Ambedkar on behalf of depressed classes.
• Separate electorates for Depressed Classes did not feature in the document, instead, the Pact put forward a system of the joint electorates with reserved seats. It reserved 148 seats from the general electorate for Depressed Classes,78 more than what the Communal Award had proposed.

Hence option 3rd is correct.