Is There a Significant Difference Between the Mean Attendance for the Classes

Multiple Choice

Is there a significant difference between the mean attendance for the classes given $$a = 0.05$$ ?

A) Yes, there is a significant difference between the means.
B) No, there is no significant difference between the means.
C) The F-test cannot be used to answer whether or not there is a significant difference between the means.
D) The Scheffé test needs to be performed in order to find whether or not there is a significant difference between the means.