According to your textbook, the following passage from a speech introduction is an example of a(n) __________ . "I became interested in canine companions two years ago when my older sister, who was paralyzed in a car accident, received a canine companion named Lucky. Since then I have learned more about the subject by watching Lucky, by talking with my sister, and by reading a number of articles and pamphlets." A. credibility statement B. narrative statement C. thesis statement D. preview statement