Sets $A, B$, and $C$ are subsets of the universal set $U$. These sets are defined as follows:

$\begin{array}{l}
U=\{1,2,3,4,5,6,7,8,9\} \\
A=\{1,3,4,5,6\} \\
B=\{5,6,8,9\} \\
C=\{2,3,4,5,8\}
\end{array}$



Find $(C \cup B) \cap A^{\prime}$.

Write your answer in roster form or as $\varnothing$.



$(C \cup B) \cap A^{\prime} =$