W: Yes. She was darkish. I should think she was between twenty-five and thirty roundabout. And she had shortish hair. I think she had a fringe, but untidy.
M: Did you notice the clothing at all？
W: Er...she had a white collar...open-necked shirt I think...or blouse and what looked like a velvet jacket but I can't remember the colonr...I think it was a green or a brown but it was some dark colour.
M: OK. Well, let's go to the man now that you just saw...if you could just describe him to me because there wasn't much on the report that you left with the sergeant.
W: Yes...well...I noticed he was wearing a funny kind of woolen jacket.
M: A bulky sort of jacket, was it？ Thick knit or...？
W: Well...yes...nut really very bulky. It looked as ff it was knitted and it had a sort of woolen collar and I think he was wearing an open-necked shirt too. He was younger than her. I should think he was in his early twenties.
M: And she looked older？
W: She looked a bit older, to me. Erin...he had his hair brushed back.
M: Yes. Anything about the shirt that you noticed...was it just a plain white shirt or was it any other sort？
W: I think it was striped but I can't be perfectly sure, but I do re member his hair was sort of wavy and brushed back and shortish.
M: OK. Well, that's fine. Thanks very much. If you leave your phone number with the desk sergeant, maybe we'll contact you in the near future.
(20)

A policeman is interviewing a witness.
B. A police sergeant is interrogating a culprit.
C. They are having a discussion about a criminal case.
D. They are holding a court investigation of a crime.