\textbf{184.} In the circuit below, the voltmeters are ideal and both lamps are on. If switch $k_1$ is opened, which of the voltmeters will read zero?
\textit{[Figure: Circuit with battery $\varepsilon$, two branches each containing a switch $k_1$ or $k_2$, lamps $L_1$ and $L_2$, and voltmeters $V_1$, $V_2$, and $V$]}
\begin{itemize}
\item[(1)] $V_1$
\item[(2)] $V_2$
\item[(3)] $V_1$ and $V$
\item[(4)] $V_2$ and $V$
\end{itemize}