Passage: I was going for a long drive , so I knew my car would need more fuel than it already had . I pulled into the station and checked the dash to be sure I knew what side the tank was on before I parked next to one of the pumps . I pulled the lever inside to open the panel for the gas cap and hopped out of my car . I slid the nozzle into the fuel tank and started to pump . I watched the gauge carefully to be sure I knew how much I was getting , and how much money I was spending . When I had a full tank , the pump stopped all on its own ! I put the nozzle back in the holster on the side of the , screwed the gas cap back in place , and closed the panel . I was ready for my trip ! Question: What did they unscrew? Option1: gas cap Option2: the panel
gas cap