After giving a test to a group of students, below is the summary of grades by gender.

$\backslash$table$[[,$A$,$B$,$C$,$Total$],[$Male$,12,20,6,38],[$Female$,16,18,15,49],[$Total$,28,38,21,87]]$

If a student was randomly chosen, find the probability that the student earned a B$.$ Leave your answer as a reduced fraction.