Give the Arrhenius equation of reaction rate

Question

$\begin{array}{1 1} (a)\;k = Ae^{\frac{-Ea}{R}} \\ (b)\;k = Ae^{\frac{-Ea}{T}}\\(c)\;k = Ae^{\frac{Ea}{RT}} \\(d)\;k = Ae^{\frac{-Ea}{RT}}\end{array}$