What do you think author wants to imply by "I slept past the chirping of birds"?

• A. Birds were chirping on his/her head but still he/she continued to sleep.
• B. He/she left the birds chirping because he/she wanted to sleep.
• C. He/she slept past the early morning time when birds chirp.
• D. He/she doesn’t like the chirping of birds and that is why he/she continued to sleep.