The Function of the U.S.solicitor General Is to

 The function of the U.S.solicitor general is to 

A)  approve every case the federal government presents to the Supreme Court. 
B)  enforce the decisions of the Supreme Court. 
C)  serve as the principal legal adviser, or counsel, to members of the Supreme Court. 
D)  maintain order in the Supreme Court's courtroom. 
E)  direct participants in oral argument before the Supreme Court.