4. A company is studying the number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month.

Number of Days Absent Probability

0 0.55

1 0.25

2 0.12

3 0.04

4 0.04

5 -

What is the variance of the number of days absent?

A. 1.1371 B. 0.7777 C. 5.9191 D. 55.52