Which of the following, if true, most strongly supports the conclusion of the argument above? A. The list of most frequently performed operas does not include operas produced by small amateur groups. B. Some opera companies are backed by patrons who are willing to commit large sums of money in order to enjoy lavish productions. C. All of the fifteen most frequently performed operas of recent times are works that have been popular for at least 75 years. D. More recordings have been produced recently of the works of Wagner than of the works of any other composer of opera. E. Operatic works of all kinds have been increasing in popularity in recent years.