单项选择题

SECTION A CONVERSATIONS In this section you will hear several conversations. Listen to the conversations carefully and then answer the questions that follow. Questions I to 4 are based on the following conversation. At the end of the conversation, you will be given20 seconds to answer the questions. Now listen to the conversation. For how long is a limited license valid

A.Less than one year.
B.Four years.
C.Five years.
D.Ten years.