Which of the following, if they occurred, would contradict Sousa's arguments? A. A private school that once demanded two semesters of vocal instruction as a requirement for graduation now offers the same classes as electives. B. A young boy in an isolated rural area during the Great Depression hears a professional bluegrass band for the first time on a phonograph, and it inspires him to ask his grandfather to teach him to play the family banjo. C. A modern recording artist comments that, because of her terrible stage fright, her live performances are less genuine than the recordings she is able to produce when she feels comfortable in the studio.