According to the author, why did the firings in the Central Falls school arouse so much at

According to the author, why did the firings in the Central Falls school arouse so much attention？

A．Because the school has never tried to enhance its situation.

B．Because the school was located in a poor area.

C．Because Obama attended a debate on the firings.

D．Because the school would not be shut down.

请帮忙给出正确答案和分析，谢谢！