\textbf{122.} In quadrilateral $ABCD$, the two non-adjacent sides and the two diagonals are each equal to a side of a rhombus. Which of the following conclusions about the quadrilateral is correct?
\begin{enumerate}
\item[(1)] The two non-adjacent sides are equal to each other.
\item[(2)] The two diagonals are perpendicular to each other.
\item[(3)] The two sides include the vertices of the rhombus, and are equal.
\item[(4)] The two non-adjacent sides are parallel.
\end{enumerate}
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