Question

--Could I ask you a rather personal question?

--________.

1. A.
   Yes, don’t worry
2. B.
   Of course, go ahead
3. C.
   Yes, help yourself
4. D.
   Of course, why not

Answer 1

B
Could I..?是表达请求的客气委婉用语，使用go ahead表示给予许可。