The​ weights, in​ pounds, of packages on a delivery truck are shown in the​ stem-and-leaf plot. Find the​ mean, the​ median, and the mode of the​ data, if possible. If any measure cannot be found or does not represent the center of the​ data, explain why. 0 3 8 1 0 4 5 8 2 5 5 5 6 6 7 8 3 1 2 3 4 5 5 5 6 8 4 4 6 7 8 9 5 5 ​Key: 3 0equals30 Question content area bottom Part 1 Find the mean. Select the correct choice below​ and, if​ necessary, fill in the answer box to complete your choice. A. The mean is    enter your response here. ​(Round to one decimal place as​ needed.) B. The mean cannot be calculated because the sample size is too small. C. The mean cannot be calculated because the data are at the nominal level of measurement. D. The mean cannot be calculated because there is an even number of data entries.