In Europe, the floor of a building at ground level is called the ground floor. What is called the second floor in America is called the first floor in Europe, and so on. (a) If an elevator in a tall building in Europe starts on the fourth basement level below ground, B4, and goes up 22 floors, on which numbered floor does it stop? (b) What would the answer to part (a) be if the building were located in America? (a) On which numbered floor does it stop?