The law of _____________ states that chemical reactions proceed with fix ratios of the number of reactant and products and products involved in the reaction.

Question

$\begin{array}{1 1} \text{(a) Mass Conservation} \\ \text{ (b) Mole Conservation} \\ \text{ (c) Constant Proportionality} \\ \text{ (d) None of the mentioned} \end{array} $