Ms. Michaels surveyed her class on whether they preferred free time at the beginning of class or at the end of class. If the ratio of students who prefer free time at the beginning of class to students who prefer free time at the end of class is 19 over 12, what does the ratio 19 over 12 represent?

19 students prefer free time at the beginning of class, and 12 students prefer free time at the end of class.
19 students prefer free time at the beginning of class, and 31 students prefer free time at the end of class.
12 students prefer free time at the beginning of class, and 19 students prefer free time at the end of class.
31 students prefer free time at the beginning of class, and 12 students prefer free time at the end of class.