Which of the following figure represents the variation of ln (R/R_0) with ln A (if R= radius of a nucleus and A= its mass number)

Which of the following figure represents the variation of $\displaystyle \ln \left(\frac{R}{R_0}\right)$ with $\displaystyle \ln A$ (if $\displaystyle R=$ radius of a nucleus and $\displaystyle A=$ its mass number)