Which of the following is true about the suspect？A．He is from a broken family.B．He opened

Which of the following is true about the suspect？

A．He is from a broken family.

B．He opened fire inside the school cafeteria.

C．He attacked the students out of jealousy.

D．He is an at-risk boy.

请帮忙给出正确答案和分析，谢谢！