M: Maybe it was the fish or meat we ate. ,F: Yes, it might have been. ,M: Or the soup. ,F: No, it couldn't have been the soup because I didn't have any. ,M: Of course. We sat in the sun for a long time. I suppose it could have been the sun. ,F: Yes, it might have been. But we've got used to sitting in the sun. ,M: That's true. Now what else did we both eat? Only those lovely pears I bought. It couldn't have been them. We're used to eating pears and you washed them. ,F: No, I didn't. I thought you had. ,M: I didn't wash them. I was sure you did. It must have been the pears then.
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: Yes. We both had fish, meat and pears. Why didn't you wash the pears? (C) F: Yes. We both had fish, meat and pears. Our discomfort must cause by the meat. (D) F: Yes. We all have ate soup, pears and meat. I believe that the soup was the cause.
B