A significant amount of the acquisition budget of a typical university library is spent on subscriptions to scholarly journals. Over the last several years, the average subscription rate a library pays for such a journal has increased dramatically, even though the costs of publishing a scholarly journal have remained fairly constant. Obviously, then, in most cases publishing a scholarly journal must be much more profitable now than it was several years ago. Which one of the following, if true, most seriously weakens the argument? ['Many university libraries have begun to charge higher and higher fines for overdue books and periodicals as a way of passing on increased journal subscription costs to library users.', 'Publishing a scholarly journal is an expensive enterprise, and publishers of such journals cannot survive financially if they consistently lose money.', 'The majority of scholarly journals are published no more than four times a year.', 'Most subscribers to scholarly journals are individuals, not libraries, and the subscription rates for individuals have generally remained unchanged for the past several years.']