Assume That the State of Colorado Institutes a Law Requiring

Assume that the state of Colorado institutes a law requiring that persons from outside the state of Colorado take a skiing exam and obtain a skiing license before being allowed to ski at a downhill resort on runs other than the beginner runs.The fee for this license is $75.Colorado residents are not required to get a license because most resident skiers learn to ski properly at an early age.This statute could be challenged under:

A) the Equal Protection Clause.
B) the Privileges and Immunities Clause.
C) the Interstate Commerce Clause.
D) the Equal Protection Clause and the Privileges and Immunities Clause, but not under the Interstate Commerce Clause.
E) the Equal Protection Clause, the Privileges and Immunities Clause, and the Interstate Commerce Clause.