In an Effort to Protect Its Dairy Industry, a Provincial

In an effort to protect its dairy industry, a provincial government passed a law that prohibits the importation or manufacture of soy milk. If a soy milk company challenges that statute on constitutional grounds, what would a court likely say?

A) Inter- provincial trade is an issue that provinces are entitled to decide for themselves.
B) The statute is entirely ultra vires because federal jurisdiction over international and inter- provincial trade extends to every issue that is related to trade, including the manufacture or production of soy milk.
C) The statute is at least partially intra vires because provinces have the authority to regulate the production or manufacture of things like soy milk.
D) The federal government has jurisdiction over international trade, but not over inter- provincial trade.
E) because property rights are protected by the Charter, the statute is constitutionally invalid