Here Is the Stem-And-Leaf Display of the Midterm Test Scores $$\begin{array} { l } 5 \\6 \\7 \\8 \\9\end{array}$$

Multiple Choice

Here is the stem-and-leaf display of the midterm test scores for the seventh-period typing class. $$\begin{array} { l } 5 \\6 \\7 \\8 \\9\end{array}$$ $$\begin{array} { | l } 9 \\358 \\24479 \\3558 \\137\end{array}$$ Would you use the median or the mean to describe the centre of this distribution?

A) Median,because the data are skewed to the left.
B) Mean,because the data are skewed to the left.
C) Mean,because the data are quite symmetric.
D) Mean,because the data are skewed to the right.
E) Median,because the data are skewed to the right.