【单选题】

Questions 8 to 10 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.
Which is the third step taken by the doctor during the diagnosisA．See the patient’s tongue.
B．Feel the patient’s pulse.
C．Ask the patient to open the mouth.
D．Ask the patient to undress and lie down.