$200\; g$ water is heated from $40^{\circ}C$ to $60^{\circ}C$. Ignoring the slight expansion of water, the change in its internal energy is close to(Given specific heat of water$=4184\; J/kg/K)$ :

Question

$\begin{array}{1 1}(1)16.7\;kJ \\ (2) 167.4\;kJ \\ (3) 4.2\;kJ \\ (4) 8.4\;kJ \end{array} $