Which of the following data sets contain an outlier?
a. {21, 23, 25, 25, 27, 28, 30, 31}
b. {121, 142, 148, 159, 166, 177, 179, 180, 190, 195}
c. {2, 3, 3, 4, 4, 5, 5, 65781922576}
d. {6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6}
HURRY
I DON'T HAVE MUCH TIME