Question

Помогите первый ответ сделаю лучшим!!!
Выберите наилучший ответ.
Do you know my brother Phil?

i don't think I do
i know
of course not
sorry he isn't here

Answer 1

— Do you know my brother Phil?
— I know

Answer 2

-Do you know my brother Phil?
- No, I don't know your brother.