In Determining Whether a State Law Unduly Burdens Interstate Commerce

In determining whether a state law unduly burdens interstate commerce, the Court considers:

A) the extent to which the law discriminates against interstate commerce in favor of local concerns.
B) only the blanket consideration of whether Congress has already legislated in the affected subject area.
C) whether the Constitution specifically allows states to regulate that subject matter.
D) only the necessity of the law to the proper functioning of the state.