Which of the following Acts introduced communal electorate in India?

Consider the following statements:
The objective of the Montague Chelmsford Reforms of 1919 was-
1. to give more powers to the local government
2. to establish dyarchy in the provinces
3. the extension of provincial government.
Which of these statements are correct?

Which of the following was/were the main feature(s) of the Government of India act, 1919

1. The act provided for the establishment, for the first time, in India of a Public Service Commission.

2. The act provided for the appointment of an India to the viceroy's executive council, as well as the provincial executive councils.

3. A provision was made for classification of central and provincial subjects.

The Government of India Act, $1935$ was based on _____.