A graph titled Trend in Electronic Cigarette Use in Young Adults from 2011 to 2012 shows school level labeled all students, middle school students, and high school students on the horizontal axis and percentage on the vertical axis. In 2012, 6% of use was in all students, 3% was in middle school students, and 10% was in high school students.
According to the graph, what is the approximate percentage of high school students who had ever tried e-cigarettes, in 2012?

3%
5%
10%
15%