Which sentence in the summary is NOT necessary to explain Katherine Dunham's long-term influence on modern dance? A: In 1963, Katherine Dunham settled in Illinois and founded the Katherine Dunham Performing Arts Training Center where she continued to teach dance technique.
B: Katherine Dunham was introduced to dance as a child, and her interest in dance and theater grew as the years passed.
C: She had an extraordinary ability to dance, and she opened her own dance school that would train black dancers in traditional dance combined with their own unique rhythms; unfortunately, the school closed.
D: When she returned to the United States, Dunham began building the dance company that would become known worldwide for performing dances based on African and Caribbean folk cultures.