A gum ball machine contains 40 blue gum balls, 25 red gum balls, 18 green gum balls and 30 purple gum balls. What is the probability that you get a red gum ball ?

Question

$\begin{array}{1 1} (a)\;\large\frac{25}{113} \\ (b)\; \large\frac{18}{113} \\ (c)\; \large\frac{40}{113} \\ (d)\; \large\frac{30}{113} \end{array}$