PLEASE HELP! Select the correct answer.
The Richter scale measures the magnitude, M, of an earthquake as a function of its intensity, I, and the intensity of a reference earthquake Io.
M = log( I/Io)

Which equation calculates the magnitude of an earthquake with an intensity 10,000 times that of the reference earthquake?

A. M =
log(I/10,000)

в.
M = log(10,000/Io)

C.
M = log(1/10,000)

D
M =log(10,000)