A、She fell down and bumped her head. B、She got a serious disease related to her stomach. C、She is being treated for blood clot i

American Secretary of State Hillary Clinton is at home after a stay in a New York hospital, where she was treated for a blood. Her doctors say she is making excellent progress. A State Department spokeswoman said Mrs. Clinton plans to return to her office next week.
    Last month, the 65-year-old diplomat suffered a stomach virus that caused her to be dehydrated------lacking enough fluids in her body. She fell and hit her head while she was sick.
    In a normal medical examination following the accident, doctors discovered the blood clot between her brain and her skull. She is currently taking medicine called blood thinners to break up the blood clot.
Questions 3 and 4 will be based on the following news item.
3. Why is Hillary Clinton staying at home?
4. According to the news item, which of the following is true?