Context: Just a quick update to let you know that Mark is back home safe and sound , however VERY ill . I just took his temperature and it was 102.9 . He 's upstairs in bed and shivering with chills . He 's coughing and groaning .

Question: What may be wrong with Mark ?
Options:
0. He has a headache .
1. None of the above choices .
2. He has cancer .
3. He has the flu .
Answer: 3