From a group of 3 boys and 3 girls, 2 children are to be randomly selected. What is the probability that 1 boy and 1 girl will be selected?	Choose the correct option.
A) 1 / 10 B) 4 / 9 C) 1 / 2 D) 9 / 15 E) 2 / 3

Rationale: "the total number of ways to choose 2 children from 6 is 6 c 2 = 15 the number of ways to choose 1 boy and 1 girl is 3 * 3 = 9 p ( 1 boy and 1 girl ) = 9 / 15 the answer is d ."
Answer: D