1. 8493. (1) A Supplemental Type Certificate may be issued to more than one applicant for the same design change, providing each applicant shows compliance with the appli cable airworthiness requirement. (2) An installation of an item manufactured in accordance with the Technical Standard Order system requires no further approval for installation in a particular aircraft. Regarding the above statements, A. both No. 1 and No. 2 are true. B. neither No. 1 nor No. 2 is true. C. only No. 1 is true