The firefighters in several cities in the area have been working long hours, and they feel they are underpaid. They have been picketing for increased wages, additional staff, and fewer hours. However, they are considered essential to the security of the country. What can be done to force them back to work? a. Enforce the National Emergency Strike provision. b. File a complaint based on the Occupational Safety and Health Act. c. Enforce the National Labor Relations Act. d. Enforce Executive Order 11246. e. File a claim with the Department of Labor