A class has fifteen boys and five girls. Suppose three students are selected at random from the class. The probability that three are two boys and one girl is

Question

\[\begin {array} {1 1} (a)\;\frac{35}{76} & \quad (b)\;\frac{35}{38} \\ (c)\;\frac{7}{76} & \quad (d)\;\frac{35}{72} \end {array}\]