Two resistors $R _ { 1 } = ( 4 \pm 0.8 ) \Omega$ and $R _ { 2 } = ( 4 \pm 0.4 ) \Omega$ are connected in parallel. The equivalent resistance of their parallel combination will be:\\
(1) $( 4 \pm 0.4 ) \Omega$\\
(2) $( 2 \pm 0.4 ) \Omega$\\
(3) $( 4 \pm 0.3 ) \Omega$\\
(4) $( 2 \pm 0.3 ) \Omega$