Which of the following sentences from the passage weakens the author's argument?
A.
Students who enroll in an after-school activity, such as band or math club, have been shown to have a higher success rate in high school classes.
B.
I know at our school, these positive after-school activities have helped numerous students prepare for difficult high school classes.
C.
The reason for doing this, according to the principal, is that the school budget does not have enough money to support these programs.
D.
If the only option students have at the end of the school day is to go home and play video games, students' grades will surely decline.