Consider the straight lines
$$\begin{aligned}
& L _ { 1 } : x - y = 1 \\
& L _ { 2 } : x + y = 1 \\
& L _ { 3 } : 2 x + 2 y = 5 \\
& L _ { 4 } : 2 x - 2 y = 7
\end{aligned}$$
The correct statement is\\
(1) $L _ { 1 } \left\| L _ { 4 } , L _ { 2 } \right\| L _ { 3 } , L _ { 1 }$ intersect $L _ { 4 }$.\\
(2) $L _ { 1 } \perp L _ { 2 } , L _ { 1 } \| L _ { 3 } , L _ { 1 }$ intersect $L _ { 2 }$.\\
(3) $L _ { 1 } \perp L _ { 2 } , L _ { 2 } \| L _ { 3 } , L _ { 1 }$ intersect $L _ { 4 }$.\\
(4) $L _ { 1 } \perp L _ { 2 } , L _ { 1 } \perp L _ { 3 } , L _ { 2 }$ intersect $L _ { 4 }$.