# The resistance of a wire is $5\: ohm \: at\: 50^{\circ}C$ and $6\: ohm \: at\: 100^{\circ}C$. The resistance of the wire at $0^{\circ}C$ will be
$\begin {array} {1 1} (A)\;1\: ohm & \quad (B)\;2\: ohms \\ (C)\;3\: ohms & \quad (D)\;4\: ohms \end {array}$