Questions 4 to 6 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation. What is the main reason the man calls the woman
A．To invite her to a picnic. B．To tell her about a trip he took. C．To convince her to go on a canoeing trip. D．To ask her if she knows the exam results