24.
\begin{tabular}{|l|l|}
\hline \begin{tabular}{l}
Fir \\
m
\end{tabular} & \begin{tabular}{l}
Market Share \\
(\%)
\end{tabular} \\
\hline A & 32 \\
\hline B & 24 \\
\hline C & 12 \\
\hline D & 4 \\
\hline E & 3 \\
\hline F & 1 \\
\hline
\end{tabular}
Refer to the data showing the slx largest firms in an industry. If firms \( \mathrm{D} \) and \( \mathbf{E} \) merged, the four-firm concentration ratio would
A. rise.
B. be indeterminate because not all of the firms in this market are shown in the table.
C. fall.
D. remain unchanged.
25. You are told that the four-firm concentration ratio in an industry is 16 . Based on this information you can conclude that
A. each of the four largest firms accounts for 4 percent of industry sales.
B. the four largest firms account for 16 percent of industry sales.
C. each of the top four firms has, on average, 16 percent of industry sales.
D. this industry's market structure is oligopoly.