S. 115BAA : Exercise of option by assessee for concessional taxation regime-Form 10-IC-By virtue of section 3(1)(b) of TLA, time permitted for filing Form 10-IC for availing concessional scheme of taxation under section 115BAA, must be treated as 31-3-2021, even when time permitted for filing of income tax return under section 139(1), in light of third proviso to section 3(1) of TLA and read with subsequent notification, was only up to 15-2-2021-Assessing Officer was directed to accept exercise of option by assessee for concessional taxation regime. [S. 139(1), TLA Act, 2020, S. 3(1)(b)]