Calculate the activation energy of a reaction if a temperature increase from 25.0°C to 55.0°C triples the rate constant. R = 8.3145 x 10⁻³ kJ/mol∙K.

a) 58.6 kJ/mol
b) 69.8 kJ/mol
c) 71.2 kJ/mol
d) 82.5 kJ/mol