How does the dialogue in this passage develop the narrator's point of view?
Jillian's pigtails bounced as she plopped onto my bed. How could anyone stay mad at such a cute kid? "You shouldn't have taken my paint set without asking," I said harshly. She quietly handed me a hand-painted paper. On it were two stick figures holding hands and smiling. The words at the top said Best Sister. I turned away so she couldn't see my smile. "Painting a picture for me doesn't make it right. I hope you've learned your lesson," I warned. Then I snuck a peek to make sure she wasn't too upset. A. It shows that the speaker does not get along well with her sister. B. It shows that the speaker is tired of always cleaning up after her sister. C. It shows that the speaker is not really upset about her sister using the paint set. D. It shows that the narrator is trying to teach her sister a lesson.