Mr. Johnson tracked the number of hours spent reading by students in two different classes over summer break. Each dot represents a student.
Which statement correctly compares the data?
A. Although the mean number of hours spent reading by class A students is generally greater than the mean number of hours spent reading by class B students, the variability creates too much overlap for any conclusion to be made.
B. Class A students generally spent the exact same number of hours reading as class B students.
C. Class A students generally spent more hours reading than class B students.
D. Class B students generally spent more hours reading than class A students.