Deduction of 5000 in NPS Account like to know exact section.

My friend working in a private firm having monthly salary of 43734 but no contribution has been made by employer but he open one NPS account and contributed Rs 53000.00 for the last financial year. He like to submit income tax return ( though he is out of tax regime) and confused in which section he will claim this 50000 deduction for NPS. Is it 80 CCD(1B) ? Kindly confirm..

Thanks.