visa interview question

[god9096]

hi
First when she came to US she got only 6months visa then we extended visa and approved for another 6months. Last year she went again to chennai consulate for visa it got rejected why did you extended you visa.She has appointment in june what kind of answer they are expecting for that kind of question. Please help

[immihelp]

Reason for extending tourist visa should be 'more tourism'.