Context: I am so exhausted I can barely type this . It 's Thursday evening at 7:30 p.m. I was up again all night last night and I did n't sleep one wink . This is the second night this week I have n't slept any .
Question: Why have they barely slept ?
Option 0: They had been having problems falling asleep .
Option 1: They had to stay up all night for school .
Option 2: None of the above choices .
Option 3: They had to stay up late for their job .
Answer: 0