Solve the Problem $R = \log \left( \frac { \mathrm { a } } { \mathrm { T } } \right) + \mathrm { B }$

Multiple Choice

Solve the problem.
-Use the formula $R = \log \left( \frac { \mathrm { a } } { \mathrm { T } } \right) + \mathrm { B }$ to find the intensity $\mathrm { R }$ on the Richter scale, given that amplitude a is 444 micrometers, time T between waves is 3 seconds, and B is 3 . Round answer to one decimal place.

A) $2.2$
B) 8
C) $8.5$
D) $5.2$