Use the Information in Table Below to Calculate the Mean

Multiple Choice

Use the information in table below to calculate the mean growth rate.
$\begin{array}{|l|l|}\hline \text { Time series data collected over } & 30 \text { years } \\\hline \text { Highest Peak } & 7 \% \\\hline \text { Next Trough } & -2 \% \\\hline \text { Number of peaks and troughs } & 4 \\\hline \text { Sum of annual growth rates } & 75 \\\hline \text { Sum of annual positive growth rates } & 90 \\\hline\end{array}$

A) 2.5%
B) 3%
C) 5
D) 9