Salesperson: "The picture tube is the core component of any TV. The TV brand P and the TV brand T use picture tube of same quality. But the price of P is lower. So when you buy TV brand P, not brand T, you pay a lower price for a TV with the same image quality. ". Which of the following, if correct, will best support the salesperson's conclusion. ['The image quality of television is determined solely by the quality of its picture tube.', 'P TV and T TV are assembled in the same factory.', 'The salesperson makes less money from selling P than T TVs.', 'P sell more than T TVs every day.']