Adriana made a data set of the lengths, in minutes, of the 25 movies in her collection and found the mean, median, mode, and range of the data set. Then, she created a new data set that included two new movies she bought. One of these is the same length as the shortest movie in her collection, and one is longer than all of her other movies. Which must be the same when the lengths of the two new movies are included in the data set? A. mean
B. median
C. mode
D. range ​