AMC 12B 2017 Problem 5

The data set [6,19,33,33,39,41,41,43,51,57] has median Q_{2}=40, first quartile Q_{1}=33, and third quartile Q_{3}=43. An outlier in a data set is a value that is more than 1.5 times the interquartile range below the first quartile \left(Q_{1}\right) or more than 1.5 times the interquartile range above the third quartile \left(Q_{3}\right), where the interquartile range is defined as Q_{3}-Q_{1}. How many outliers does this data set have?

Answer Choices
A. 0
B. 1
C. 2
D. 3
E. 4