A) 13
B) 12
C) 25
D) 44

Multiple Choice

$$\begin{array}{l}\text { Given the following frequency distribution, how many pieces of data were less than } 28.5 \text { ? }\\\begin{array} { c c } \text { Class Boundaries } & \text { Frequencies } \\13.5 - 18.5 & 4 \\18.5 - 23.5 & 9 \\23.5 - 28.5 & 12 \\28.5 - 33.5 & 15 \\33.5 - 38.5 & 17\end{array}\end{array}$$

A) 13
B) 12
C) 25
D) 44