In 1991,section 276 of the Criminal Code (The So-Called "Rape

In 1991,section 276 of the Criminal Code (the so-called "rape shield" provision) was struck down by the Supreme Court.What was the rationale used by the court to rule that this provision was unconstitutional?

A) because it could deny the accused his right to a fair trial
B) because it effectively resulted in the victim being on trial
C) because a women's sexual past is key to the guilt or innocence of the accused
D) because the complainant's name may be released to the public at the time of the trial