Carefully Review the Research Matrix Presented Below A)90
B)30
C)60
D)Cannot Determine

Carefully review the research matrix presented below.If this is a within subjects design, how many total participants will be used in the experiment?
$$\begin{array} { | l | l | l | } \hline \text { Rock Music Group } & \text { Rap Music Group } & \text { Hip-Hop Music, Group } \\\hline 30 \text { participants } & 30 \text { participants } & 30 \text { participants } \\\hline\end{array}$$

A) 90
B) 30
C) 60
D) Cannot determine