请阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

A

    It was unusually quiet in the emergency room on December 25. I didn't think there would be any patients, sighing about having to work on Christmas. Just then five people showed up at my desk, a pale woman and four small children.

    “Are you all sick?” I asked doubtfully.

    “Yes.” she said weakly and lowered her head.

    But when it came to descriptions of their presenting problems, things got a little puzzling. Two of the children had headaches, but the headaches weren't accompanied by the normal body language of holding the head or trying to keep it still. Two children had earaches, but only one could tell me which ear was affected. The mother complained of a cough but seemed to work to produce it.

    Something was wrong, but I didn’t say anything but explained that it might be a little while before a doctor saw her. She responded. “Take your time; it's warm here.”

    I checked the chart after the admitting clerk had finished registering the family. No address---they were homeless. The waiting room was warm.

    I looked out at the family sitting close to each other by the Christmas tree. The little one was pointing at the television and the oldest one was looking at the decorations on the Christmas tree.

    I went back to the nurses' station and mentioned we had a homeless family in the waiting room. The nurses, complaining about working on Christmas, turned to sympathy for a family just trying to get warm on Christmas. The team went into action, much as we do when there's a medical emergency. Only this one was a Christmas emergency.

    We were all offered a free meal in the hospital cafeteria on Christmas Day, so we fetched that meal and prepared a large meal for our Christmas guests. Our team worked to meet the needs of a family who just wanted to be warm on Christmas Day.

    Later, as the family walked to the door to leave, the four-year-old came running back, gave me a hug and whispered, “Thanks for being our angels today.”