A certain junior class has 1000 students and a certain senior class has 900 students. Among these students, there are 60 siblings pairs each consisting of 1 junior and 1 senior. If 1 student is to be selected at random from each class, what is the probability that the 2 students selected will be a sibling pair?	Choose the correct choice from the following:
A) 3/40000  B) 2/30000  C) 9/2000  D) 1/60  E) 1/15
Let's see   Pick 60/1000 first   Then we can only pick 1 other pair from the 800   So total will be 60 / 900 *1000   Simplify and you get 2/30000   Answer is 2/30000
<result>B</result>
A certain junior class has 1000 students and a certain senior class has 900 students. Among these students, there are 60 siblings pairs each consisting of 1 junior and 1 senior. If 1 student is to be selected at random from each class, what is the probability that the 2 students selected will be a sibling pair?