How many people have been killed in the fighting in Syria？A．Less than 70,000.B．Less than 7

How many people have been killed in the fighting in Syria？

A．Less than 70,000.

B．Less than 7,000.

C．More than 7,000.

D．More than 70,000.

请帮忙给出正确答案和分析，谢谢！