【单选题】

{{I}}Questions 5 to 7 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.{{/I}} The man didn’t put his luggage outside the door on time because

A、he had a hard time packing the suitcases
B．he had gone to bed late the night before
C．he forgot the time to put his luggage out
D．his suitcases were stolen