—You look unhappy.           ?          

—I have so much homework to do that I couldn't play soccer.           [ ]

A. Do you feel sad          

B. Are you ill          

C. What's the'matter

简要病史：男性，21岁。反复便血1年，加重1周门诊入院。要求：你作为住院医师，请围绕以上简要病史，写出应该询问的患者现病史及相关病史的内容。