The Following Dotplot Shows the Migraine Intensity (On a Scale

The following dotplot shows the migraine intensity (on a scale of 1 to 10) for 29 adults suffering from recurring migraines.
What is the five-number summary for this data set?

A) 7, 8, 9, 10, 10
B) 7, 8, 8.5, 9, 10
C) 7, 7.5, 8.5, 9.5, 10
D) 7, 7.5, 8.5, 9, 10