The correct answer is C. The words "struck harsh upon my ears" suggest an irritated tone. The excerpt shows the narrator sitting in his study when an old acquaintance, Rahmun, shows up. His reaction, however, is not positive. After inquiring, he learns that Rahmun has just been released from jail. This makes the narrator recoil in disgust, since he had never before talked with an ex-convict, and he thinks to himself that it would have been better had he not shown up.