A jar has 10 marbles, 4 yellow, 2 red and the rest white. What is the probability that a white marble were not removed ?

Question

$\begin{array}{1 1} (a)\; \frac{3}{5} \\ (b)\; \frac{2}{5} \\ (c)\; \frac{1}{5} \\ (d)\; \frac{4}{5} \end{array}$