Well it is almost time to leave for work . I am still feeling so burnt out . I guess I take longer to recover from lack of sleep than before , but no worries . I am grateful . The reason I am so tired is because I & Sharon have been doing and getting so much lately . We got the apartment we really wanted .
According to the above context, choose the best option to answer the following question.
Question: Why was n't I sleeping well ?
Options:
A. I was worrying about the game .
B. I was partying too much .
C. I was feeling too sick .
D. I was working too hard .


D