The moment the words were out of my mouth, i wished i could take them back. i didn't mean to hurt keith's feelings. he is such a nice person, and he certainly doesn't deserve to be treated so poorly. i guess the stress from my job has been more than i can handle. instead of taking my problems out on him, i need to deal directly with the people who create the stress. if only i didn't care so much what people thought of me at work, then this would not have happened. the tone of the passage can be described as

a. funny
b. regretful
c. admiring