question: What did Bobby buy before taking the elevator to the ground floor?
story: Bobby's grandmother was studying at a school in New York City.  She lived at the school\newlineyear round.  So Bobby's mother put him on a bus to the city and his grandmother picked him\newlineup at the Port Authority bus stop.  They took the train back to the school.  They put\newlineBobby's backpack on a rack in the guest room.  Then Bobby and his grandmother went out for\newlinea walk.  They stopped at a corner shop for pizza and sodas.  Then they walked to the\newlineEmpire State Building.  At the top of the Empire State Building they looked out over the\newlinecity.  They counted all the bridges and looked at all the tall buildings.  Bobby bought\newlinethree postcards and a little snow globe in the shop. Then they took the elevator back to\newlinethe ground floor.  Next they took a yellow cab to Central Park.  They rode the carousel\newlineand went to the zoo.  Bobby's favorite animals were the monkeys.  He did not like the\newlinesnakes at all.  After they had ice cream cones, Bobby and his grandmother took the train\newlineback to her school.  They had salads for supper.  Then they read a story together.\newlineBobby's grandmother made up her sofa bed for Bobby as they made plans for the next day.\newlineBobby wanted to know if they could go to a baseball game.  His grandmother said she would\newlineget tickets.
answer_options.A: A monkey.
answer_options.B: Three postcards and a snow globe.
answer_options.C: Pizza and sodas.
answer_options.D: An ice cream cone.