Payment of tax on savings bank interest amount

I got the last savings bank interest on 25.03.2019 and as it is taxable I am trying to pay the amount of tax on the interest amount. I select 

(0021) Income Tax (Other than Companies)

(300) Self Assessment Tax

Assessment Year 2019 20

But at the time of proceeding I got this message "Assessment Year cannot be greater than the current financial year for the type of payment selected by you"

If I select 

(100) Advance Tax  there is no problem, should I proceed with this one or anything is wrong in my part. I am an individual salaried person. 

Please reply quickly as I have to pay within 31.03.2019.

Many thanks for your time. 

T K Ghosh