单项选择题


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.
According to the conversation, how do they finally decide to place the advertisement

A.They will only advertise internally.
B.They will only advertise externally.
C.They will advertise externally first, then internally.
D.They will advertise internally frost, then externally.