A box contains exactly five chips, three red and two white. Chips are randomly removed one at a time without replacement until all the red chips are drawn or all the white chips are drawn. What is the probability that the last chip drawn is white?

**Answer Choices**

A. \dfrac{3}{10}

B. \dfrac{2}{5}

C. \dfrac{1}{2}

D. \dfrac{3}{5}

E. \dfrac{7}{10}