Context: The black cloud 's clinic is full of complex patients who need three referrals apiece . The white cloud 's clinic is full of patients who do n't show up . What finally got me to believe in the power of the black cloud was one resident I worked with last year . One month she was working in the clinic but covering call in the PICU every fourth night ( as I am doing this month . )

Question: Why are you cover call in the PICU this month ?
Options:
0. The schedule for that job rotates monthly and new people have the responsibility of doing it monthly
1. I am the best at covering calls at the PICU so I have that job
2. None of the above choices .
3. I needed to make extra money so I applied for the position
Answer: 0