If $$R_c=m\times\ln\left(1+\ \frac{\ R_m}{m}\right)$$ then $$R_m$$ is equal to

A

$$R_m=\ln\left(1+\frac{R_c}{m}\right)$$

B

$$R_m=\ln\left(1+\frac{R_c}{e}\right)$$

C

$$R_m=m\left(e^{\frac{R_c}{m}}-1\right)$$

D

Cannot be determined