Instructions Full Game: These are multiple-choice quizzes with four possible answer choices that include all questions in a given set.     
On the 2019 Fortune 500 list, what company, based in Minnetonka, Minnesota, and headed by David S. Wichmann, came in at position #6?
Marathon Petroleum (MPC)
Chevron (CVX)
UnitedHealth Group (UNH)
Wells Fargo (WFC)