A random sample of 40 college professors is selected from all professors at a university. The following list gives their ages. 66, 46, 47, 41, 37, 53, 45, 44, 47, 23, 52, 60, 50, 40, 61, 68, 52, 43, 51, 20, 38, 63, 48, 48, 38, 30, 48, 35, 29, 40, 63, 35, 37, 48, 23, 37, 46, 36, 30, 56. Construct a stem-and-leaf plot for the data. Complete parts a. and b. a. Determine the leaves for each corresponding stem. Complete the table below. (Use ascending order.) Stem 2 3 4 Leaves 5 6 b. What does the shape of the display reveal about the ages of the professors? A. None of the college professors live to be 70 years old. B. The greatest number of college professors are in their 40s. C. If you are younger than 30, you cannot be a college professor. D. None of the above.