It is important to note that a reading of 4 indicates an earthquake ______ with a reading

It is important to note that a reading of 4 indicates an earthquake ______ with a reading of 3.

A．ten times as strong as one

B．as strong as one ten times

C．ten times as strong as that

D．as strong as that ten times

请帮忙给出正确答案和分析，谢谢！