I know for conferences you have to say "business", because you're allowed to receive reimbursements for travel from American businesses without violating the business visa rules. And also you will not receive lodging or travel reimbursements if you accidentally day leisure, lol.
Business is okay to say, but 'work' is a huge no-no and will definitely lead to the immigration officials taking you to the little room in the back to "ask more questions", in the best of cases.
I know for conferences you have to say "business", because you're allowed to receive reimbursements for travel from American businesses without violating the business visa rules. And also you will not receive lodging or travel reimbursements if you accidentally day leisure, lol.
Business is okay to say, but 'work' is a huge no-no and will definitely lead to the immigration officials taking you to the little room in the back to "ask more questions", in the best of cases.