An Earthquake Had an Intensity $10 ^ { 6.1 }$ Times More Powerful Than a Reference Level Earthquake, Or

Multiple Choice

An earthquake had an intensity $10 ^ { 6.1 }$ times more powerful than a reference level earthquake, or $106.1 \cdot \mathrm { I } _ { 0 }$ . What was the magnitude of this earthquake on the Richter scale? $\mathrm { R } = \log _ { 0 } \left( \mathrm { I } / \mathrm { I } _ { 0 } \right)$ .

A) $3.9$
B) $16.1$
C) 14
D) $6.1$