The sample data below shows the number of hours spent by five students over the weekend to prepare for Monday's Business Statistics exam.
3 12 2 3 5.
The mean and the median of the numbers of hours spent by the five students are ________.
A) 5 hours and 2 hours, respectively
B) 5 hours and 3 hours, respectively
C) 2 hours and 5 hours, respectively
D) 3 hours and 5 hours, respectively