The correct answer is option A.
The Gamma waves emitted from radioactive decay have a frequency of around 10¹⁹ Hz, which is much greater compared to the alpha of beta waves.
The frequency is directly proportional to the energy of the waves as given by the equation,
Where E is the energy, h is the Planck's constant, and f is the frequency.
Thus the gamma waves have a lot of energy compared to the other options.
Thus the correct answer is option A.