(a) A deregulated company may petition the commission to relinquish the company's certificate of convenience and necessity and receive a certificate of operating authority.
(b) The commission shall issue the deregulated company a certificate of operating authority and rescind the deregulated company's certificate of convenience and necessity if the commission finds that all of the company's markets have been deregulated under Subchapter B.
(c) A deregulated company that holds a certificate of operating authority is a nondominant carrier.