A. Any proceeds collected pursuant to the provisions of Section 9C of Article X of the Oklahoma Constitution shall only be expended for the purpose of providing funds for the support, organization, operation and maintenance of district ambulance services, known as emergency medical service districts.

B. Emergency medical service districts formed pursuant to said Section 9C of Article X of the Oklahoma Constitution may own and operate the ambulance service or may provide ambulance service through contracts with one or more ambulance service providers.

C. Emergency medical service districts that provide ambulance services through contracts with one or more ambulance service providers shall utilize not less than ninety percent (90%) of all revenues collected by the district for payment of such contracts to said providers.