Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway 1-80 in Nebraska. What is the mode? Stem unit = 10 Leaf unit = 1 Frequency Stem Leaf 1 4 9 UT UT 17 0 1 2 2 2 4 5 5 5 5 6 6 8 8 9 9 9 19 0 1 1 1 2 3 3 3 4 5 6 6 6 7 7 8 9 9 9 013 35 7 9 012 2 49 Multiple Choice 62 O 79 O 65 O It is impossible to tell