maturity of senior citizen saving scheme

RASHMI (UNEMPLOYED) (47 Points)

27 April 2019  
In 2010, A invested 5 lacs in senior citizen saving scheme. but didn't claim deduction u/s 80 c.
In 2018 the proceeds were recovered with interest.
Tax on above interest is paid every year.
Will A be eligible to pay tax on principal income received?
If possible please provide the section for the above