The equilibrium constant at $298\;K$ for a reaction $A + B \rightleftharpoons C + D$ is $100$. If the initial concentration of all the four species were $1\;M$ each, then equilibrium concentration of $D (in\; mol\; L^{-1})$ will be :

Question

$\begin{array}{1 1} (1)0.182 \\ (2) 0.818 \\(3) 1.818 \\ (4)1.182 \end{array}$