We been wanting to go to the Ma Wan Park for some time but were always full of excuses . After sending my mum to airport today , it was only 9 am . I was sleepy and tired but I did n't want to sleep cos that will make me feel even worse .

Generate a question about the above context.
Why were they feeling so tired ?
Select from: a. None of the above choices .. b. They had to wake up early to catch a flight at the airport .. c. They had to wake up early to taking their mum to the airport .. d. They had stayed up too late the night before a flight ..