Museum visitor: The national government has mandated a 5 percent increase in the minimum wage paid to all workers. This mandate will adversely affect the museum-going public. The museum' s revenue does not currently exceed its expenses, and since the mandate will significantly increase the museum' s operating expenses, the museum will be forced either to raise admission fees or to decrease services. Which one of the following is an assumption required by the museum visitor's argument? ["Some of the museum's employees are paid more than the current minimum wage.", "Some of the museum's employees are not paid significantly more than the minimum wage.", 'The annual number of visitors to the museum has increased steadily.', 'Not all visitors to the museum are required to pay an admission fee.']