Obtain the five-number summary for the given data. The National Education Association collects data on the number of years of teaching experience of high-school teachers. A sample taken this year of 19 high-school teachers yielded the following data on number of years of teaching experience 33 13 1 20 31 9 3 10 2 22 25 1 33 28 4 16 23 21 31 O A. low = 1, lower quartile = 3.75, median = 20, upper quartile = 25.75, high = 33 O B. low = 1, lower quartile = 3.75, median = 18, upper quartile = 25.75, high = 33 O C. low = 1, lower quartile = 4, median = 18, upper quartile = 28, high = 33 O D. low = 1, lower quartile = 4, median = 20, upper quartile = 28, high = 33