QUESTION 3 In general, which of the following is least likely to unconstitutionally burden interstate commerce? A. A state law requiring that all state vehicles burn gasoline produced and refined within the state. B. A state law imposing tougher purity standards on food imported from out of state than from food produced in-state C. A state law requiring in-state liquor distillers to post the prices at which they will sell in state, and not to exceed those prices when they sell in other states. D. A state tax on gasoline that makes it more expensive for trucking companies to route their trucks through the state