Instructions Full Game: These are multiple-choice quizzes with four possible answer choices that include all questions in a given set.     
On the 2020 Fortune 500 list, what company, based in Philadelphia, Pennsylvania, and headed by Brian L. Roberts, came in at position #28?
Comcast (CMCSA)
Costco Wholesale (COST)
General Motors (GM)
Phillips 66 (PSX)