What is the professor's opinion about the claim that, in general, the Paris audience was upset more by the dancing than by Stravinsky's music? A. He believes it is a valid conclusion, supported by historical evidence. B. He believes the claim was an intentional exaggeration, made to attract a larger audience. C. He believes there is no sure way of knowing the true cause of the audience's reaction. D. He believes the claim was disproved by audience responses to later performances.