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 1 to 4 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. Why is it NOT necessary for the patient to get some contact lenses

A.She is not at all shortsighted.
B.Her eyes are allergic to contact lenses.
C.She can make do without any glasses.
D.Her left eye is good enough.