For the Following Frequency Distribution of Quiz Scores,how Many Individuals $$\begin{array} { l l } \mathrm { x } & \mathrm { f } \\5 & 6 \\4 & 5 \\3 & 5 \\2 & 3 \\1 & 2 \\\hline\end{array}$$

Multiple Choice

For the following frequency distribution of quiz scores,how many individuals took the quiz?? $$\begin{array} { l l } \mathrm { x } & \mathrm { f } \\5 & 6 \\4 & 5 \\3 & 5 \\2 & 3 \\1 & 2 \\\hline\end{array}$$

A) ?n = 5
B) ?n = 7
C) ?n = 15
D) ?n = 21