The dot plots below show the test scores of the seventh-grade students and the fifth-grade students at a local school. Which statement compares the shape of the dot plots?

a) only the fifth-grade data points are clustered toward the left of the plot.

b) only the seventh-grade data points are clustered toward the left of the plot.

c) Only the fifth-grade data points are disturbed fairly evenly.

d) only the seventh-great data points are disturbed fairly evenly.