We discussed how elevators impacted the development of skyscrapers. Draw a curve for each of the following cases on the same graph. The curve will show how the price of office space per square foot within a building changes with floor distance above the street level. Label the horizontal axis as floor distance above the street and the vertical as price per square foot.a. (2 points) People walk up and down stairs (elevators do not exist) and there are no view amenities from higher floors. b. (2 points) People ride elevators up and down, and there are no view amenities from higher floors. c. (2 points) People ride elevators up and down and the view is better on higher floors d. (4 points) Explain the reasoning behind the differences in the curves