My Thai girlfriend was issued with a one year US visa last year.

She now is going to apply for another one.

On the application form, they ask “Have you been ten-printed?” Yes/No

(They are asking her if, on the day of her interview in April last year, she provided fingerprints for all her fingers, as opposed to having provided only two fingerprints.)

She can't remember whether it was ten or two.

So, does she answer Yes or No?

Say "no" and give them 10 fingerprints this time.