Sec. 80M of income tax act

Dividend declared before 1/4/2020 by comp. X Ltd a domestic company and has paid on 1/9/2020.
1. whether DDT is payable by comp. X?
2. Whether comp. X will get deduction u/s 80M
Where dividend income for comp. X is 1000000 for FY 20-21.

3.whether your answer will change if dividend paid is on 1/5/21 and dividend income for comp x is 1000000 in FY 21-22.