Use the image to answer the question.
An illustration shows four rows of data. A vertical line is drawn after the first digit from the left, thereby splitting the rows into a two-column table. The data are as follows: The first row shows digit 5 in the first column and digits 3 5 5 in the second column. The second row shows digit 4 in the first column and digits 0 0 0 1 4 6 in the second column. The third row shows digit 3 in the first column and digits 7 7 8 8 9 in the second column. The fourth row shows digit 2 in the first column and digits 1 3 4 5 in the second column.
Which number appears most frequently in the dataset shown in this stem-and-leaf plot?
(1 point)
Responses
88
88
77
77
55
55
40
40