For a first-order reaction (A → B), the temperature (T) dependent rate constant (k) in sec-1 was found to follow the equation: \(\log \mathrm{k}=\left(-\frac{20}{\mathrm{~T}}\right)+4\). The activation energy (Ea) and pre-exponential factor (A) respectively, are
1
46.06 cal mol-1 and 10-4 s-1
2
92.12 cal mol-1 and 104 s-1
3
46.06 cal mol-1 and 104 s-1
4
92.12 cal mol-1 and 10-4 s-1