9. (1) Recently, my sister asked me to baby-sit her two sons for the evening. (2) I figured I would get them dinner, let them watch a little TV, and then put them to bed early. (3) The rest of the night I planned to watch TV and collect an easy twenty dollars. (4) Well, right before we sat down for a pizza dinner, Rickie let the parakeet out of its cage. (5) The dog started chasing the bird as it flew around the house, so I decided to catch it before the dog did. (6) The boys and I had the bird cornered by the fireplace when Rickie jumped for it and knocked over the hamster cage. (7) The hamsters took off under the sofa while the bird flew away. (8) Fortunately, the dog had disappeared at this point. (9) I took care of the hamsters while the boys caught the parakeet and put it back in its cage. (10) When we returned to the kitchen to eat cold pizza, I discovered why the dog had lost interest in the bird chase. (11) What was left of the pizza was lying on the floor, and tomato sauce was dripping like blood from the dog’s chin. (12) Later, when my sister returned, I took the twenty dollars and told her to get someone else next time.

The tone of this passage is

a. humorous.

b. warm.

c. bitter.