What Distinguished Cary Grant from Other Hollywood Actors During the Studio

What distinguished Cary Grant from other Hollywood actors during the studio era?

A) He was the first actor to have his own production company.
B) He signed only two-year contracts with studios.
C) He was not under any studio contract.
D) He was one of the few top actors to not work with Alfred Hitchcock.
E) He won the most Academy Awards.