Two unimolecular reactions, I and II, have the same rate constant at 25° C but E_a for reaction I is larger than E_a for reaction II. Which statement about these two reactions is correct?

$k_{\text{reaction }}\mathrm{I}$ is larger than $k_{\text{reaction }}\mathrm{II}$ at lower temperatures but smaller at higher temperatures.

$k_{\text{reaction }}\mathrm{I}$ is larger than $k_{\text{reaction }}\mathrm{II}$ at temperatures both lower and higher than 25° C.

$k_{\text{reaction }}\mathrm{I}$ is the same as $k_{\text{reaction }}\mathrm{II}$ at all temperatures.

$k_{\text{reaction }}\mathrm{I}$ is smaller than $k_{\text{reaction }}\mathrm{II}$ at lower temperatures but larger at higher temperatures.