In Determining a Constitutional Challenge, the Supreme Court of Canada

In determining a constitutional challenge, the Supreme Court of Canada upheld the federal government's bilingual language rights legislation. Which of the following exemplifies the reason for the Court's decision?

A) The Supreme Court's decision follows the doctrine of paramountcy.
B) The Court's decision does not apply in the province of Quebec.
C) Regulating language law falls within federal government jurisdiction.
D) The Supreme Court's decisions must uphold the public interest.