5) In a certain town, 70% of adults have a college degree. The accompanying table describes the probability distribution for the number of adults (among 4 randomly selected adults) who have a college degree. Find the variance for the probability distribution. 5)

0 0.0081
1 0.0756
2 0.2646
3 0.4116
4 0.2401
A) 8.68 B) 0.92 C) 0.84 D) 0.72