The five-number summary for the lengths of songs, in minutes, performed by a popular music group is given below. Minimum: 1.8 Q1: 3.3 Median: 3.8 Q3: 4.5 Maximum: 9.2

The shortest song performed by the group is 1.8 minutes while the longest three songs are 5.7, 7.5, and 9.2 minutes. Are any of these song lengths outliers?

a. No, none of the lengths are outliers.
b. Yes, 7.5 and 9.2 are outliers.
c. Yes, 1.8 and 9.2 are outliers.
d. Yes, 5.7, 7.5, and 9.2 are outliers.