--Do you mind if I sit here?

--     . It’s for Mr. Brown.

A. Better not                    B. Never mind

C. Not at all        D. Of course not

---Do you mind if I sit here?
---______. It’s for Mr. Brown.

1. A.
   Better not
2. B.
   Never mind
3. C.
   Not at all
4. D.
   Of course not