Question 8 of 10 0/ 0.5 The height, h in om, of an eroding sand dune as a function of year, I, is given by h = f(1). Describe the difference between this sand dune and a second one whose height is given by the following functions. Your answer is inchsect (a)h = f(1 + 40) The erosion of the second dune starts 40 years later than the first. The height of the first sand dune in year ( is the same as the height of the second sand dune in 40 years. The erosion of the second dune starts 40 years earlier than the first. The height of the second sand dune in year O is the same as the height of the first sand dune in 40 years. The erosion of the second dune starts 40 years earlier than the first. The height of the first sand dune in year O is the same as the height of the second sand dune in 40 years. O The height of the second sand dune is 40 cm higher than the first. O The height of the second sand dune is 40 om lower than the first. eTextbook and Media Hint Question Part Score 0/0.25 X Your answer is incorrect (b)h = f() + 90 The erosion of the second dune starts 90 years earlier than the first. The height of the first sand dune in year ( is the same as the height of the second sand dune in 90 years The height of the second sand dune is 90 om higher than the first. The erosion of the second dune starts 90 years earlier than the first. The height of the second sand dune in year O is the same as the height of the hirst sand dune in 90 years The erosion of the second dune starts 90 years later than the first. The height of the first sand dune in year ( is the same as the height of the second sand dune in 90 years. The height of the second sand dune is 90 am lower than the first