At a Minimum, What Experimental Data Is Required to Determine

At a minimum, what experimental data is required to determine the activation energy for a reaction?

A) one accurate value of the rate constant at one well-known temperature.
B) several accurate values of the rate constant, at one temperature, with different concentrations.
C) accurate values of five rate constants at five known temperatures.
D) the rate of reaction as a function of the concentrations of the reactants.
E) cannot be calculated from experimental data.