During a Convention at a Large Hotel, Several Attendees Become

During a convention at a large hotel, several attendees become very ill with respiratory symptoms for which they are diagnosed with Legionnaires' disease.Which regulatory agency is responsible for investigation of an outbreak of Legionnaires' disease?

A) Occupational Safety and Health Administration ( OSHA )
B) The Joint Commission ( TJC )
C) Centers for Disease Control and Prevention ( CDC )
D) National League of Nursing Accrediting Committee ( NLNAC )