问题详情

Based on the information provided, the “time earthquake starts at the focus” in Figure 2 corresponds to which of the following points on Figure 3 ？
A.0 km, 0 min
B.2,000 km, 5 min
C.5,000 km, 12 min
D.10,000 km, 20 min请帮忙给出正确答案和分析，谢谢！