In the contributed package car, theres a data frame called Duncan, which provides historical data on perceived job prestige in 1950. Install the car package and access the Duncan data set and its help # file. Then, do the following: Write R code that will plot education on the x-axis and income on the y-axis, with both x- and y-axis limits fixed to # be [0:100]. Provide appropriate axis labels. For jobs with a # prestige value of less than or equal to 80, use a black _ as the # point character. For jobs with prestige greater than 80, use a blue _. Then Add a legend explaining the difference between the two # types of points and then save a 500 _ 500 pixel .png file of the image.