official SAT Test No 09 Section 4 (Statistics Problem -Mean- Median)

The list shown gives the heights, in inches, for the 6
ten-year-old children in a group.

52, 53, 54, 54, 55, 56
A seventh child with a height of 60 inches will be
added to the group. Which of the following
correctly describes how the mean and the median
of the group will change when the seventh child is added?