The graph shows the ages of different concertgoers who have backstage passes.

Graph shows age (years) labeled 12 to 48 on the horizontal axis and number of concertgoers on the vertical axis. 3 concertgoers are 12 to 15. 6 concertgoers are 15 to 18. 8 concertgoers are 18 to 21. 6 concertgoers are 21 to 24. 5 concertgoers are 24 to 27. 4 concertgoers are 27 to 20. 3 concertgoers are 30 to 33. 0 concertgoers are 33 to 42. 1 concertgoer is 42 to 45 or 45 to 48.
Which statement is true about the graph?

A late arrival who is 21 years old with a back-stage pass will make the mean greater than the median.
The two holders of back-stage passes whose ages are above 40 make the mean age higher than the median age.
The ages of concert-goers with backstage passes are skewed left, so the mean age is less than the median age.
A concert-goer who is 18 years old and wins a back-stage pass will pull the mean more than 2 years less than the median.