I had the same problem recently. I simply typed NA and it passed without a problem
Contrary to what honorable @uncovery suggested, I wouldn’t recommend stating that you haven’t been there. Ethics aside, India scrutinizes visa applications carefully (they seem to be afraid of people of Pakistani origin), so your incorrect information is likely to be uncovered.
Note that Indian visa application form asks for a lot of information which is not going to change (for example, your parents names and places of birth), so it is quite easy for them to match you in a computer.
What I suggest to do is to:
Credit:stackoverflow.com‘