An Earthquake Was Recorded with an Intensity Which Was 125,893 $\left( \mathrm { I } / \mathrm { I } _ { 0 } \right)$

Multiple Choice

An earthquake was recorded with an intensity which was 125,893 times more powerful than a reference level earthquake, or 125,893 · I0. What is the magnitude of this earthquake on the Richter scale (rounded to the
Nearest tenth) ? Intensity on the Richter scale is log10 $\left( \mathrm { I } / \mathrm { I } _ { 0 } \right)$

A) 5.1
B) 4.1
C) 0.5
D) 11.7