A bag contains 4 blue, 5 white and 6 green balls. Two balls are drawn at random. What is the probability that one ball is white?

Question

$( A ) \large\frac{1}{2} \\ ( B ) \large\frac{10}{21} \\ ( C ) \large\frac{3}{4} \\ ( D ) \large\frac{2}{35}$