# The Kirchhoff’s first law $(\sum i = 0)$ and second law $(\sum iR = \sum E)$ where symbols have their usual meanings, are respectively based on conservation of
$\begin {array} {1 1} (A)\;Charge\: and\: Energy & \quad (B)\;Charge\: and\: Momentum \\ (C)\;Energy\: and\: Charge & \quad (D)\;Momentum \: and\: Charge \end {array}$