Your best friend has a brother who has had Type I diabetes since childhood. You are going to give a speech in class about how Type I diabetes affects family members. You use your friend as expert testimony. Which of these is a reasonable view of this choice? A. This is legitimate because your friend has grown up around Type I diabetes and has a long-term understanding of it. B. The friend’s insights are valuable as peer testimony. C. This is not legitimate because the friend is not a medical professional. D. This is not legitimate because it’s not a published source.