Personal visit extension on business visa

[amit2008]

Hi

I have been granted a business visa for my visit to the US as the visit is being sponsored by my company for a seminar. My official stay in the US will be for 15 days for the puropse of company work. But I have extended my visit by 5 days for touring around and already have booked internal US airline tickets for the same. Do you think I should mention this extension for tourism during my entrance interview in the US cause I am going on a business visa? Do they grill much over this?

[peace]

Do not need to mention.
They give 3 months stay to business visitors anyway, even if you mention
15 days stay.