Thesis: High schools should extend the school day by one hour to increase the amount of instruction time.
Which counter-argument directly responds to the thesis above?
A. Indeed, increasing the school day by two hours would allow for even more class time for each student.
B. Schools often focus on standardized testing as a measurement of student learning.
C. More hours don't necessarily mean more quality instruction; both students and teachers get worn out.
D. Extending the school day by one hour will not solve the problems of bullying and gang activity.