The Frequency Distribution Below Summarizes Employee Years of Service for Alpha

Multiple Choice

The frequency distribution below summarizes employee years of service for Alpha Corporation. Determine the width of each class. $$\begin{array} { c | c } \text { Years of Service } & \text { Frequency } \\\hline 1 - 5 & 5 \\6 - 10 & 20 \\11 - 15 & 25 \\16 - 20 & 10 \\21 - 25 & 5 \\26 - 30 & 3\end{array}$$

A) 5 years
B) 6 years
C) 4 years
D) 10 years