Vixen! is a 1968 satiric softcore sexploitation film directed by American motion picture director Russ Meyer. It was the first film to be given an X rating for its sex scenes, and was a breakthrough success for Meyer. The film was developed from a script by Meyer and Anthony James Ryan, and starred Erica Gavin.
Can we infer the following?
Vixen was directed by Russ Meyer after 1950.

Choices:
a). Yes;
b). It's impossible to say;
c). No;
The answer is:
a).