PLZ HELP NEED HELP FAST 20 POINTSThese data show the age in years of 9 members of the youth orchestra.

12 14 16 17.5 10 18 15 15.5 19

What is the IQR (interquartile range) for these data?

A 4.75

B 9.00

C 15.50

D 17.75