Consider the following relations and query.
$$
\begin{gathered}
\textsf{r(A, B, C)}\\
\textsf{s(A, B, C)}\\
\sigma_{\textsf{A>C}}([(\textsf{r} \cup \text{s) - (r - s)] - (s - r))}
\end{gathered}
$$
Which of the following is equivalent to the above query?
- $\sigma_{\textsf{A>C}}(\textsf{r} \bowtie \textsf{s})$
- $\sigma_{\textsf{A>C}}(\textsf{r} \cup \textsf{s})$
- $\sigma_{\textsf{A>C}}(\textsf{r}) \cap \sigma_{\textsf{A>C}} (\textsf{s})$
- $\sigma_{\textsf{A>C}}(\text{r} \cap \textsf{s})$
