Read the following context and choose the best option to answer the question.
Context: For we all are caught in the middleOf one long treacherous riddleI'm tired and I ' m not sure why . I ' m happy , that much is true , but not so much for myself as I am for others . I 'd rather be happy for myself for a change , but I think this will do . At least things are looking up .
Question: Why is this person not as happy for themselves as others ?
Options: 
A. The person is largely experiencing a good stretch in life .
B. None of the above choices .
C. The person may be experiencing depression .
D. The person could be classified as selfish .


C