A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct?

• A. he wavelength of X-ray photon is less than the wavelength of visible radiation photon.
• B. oth the photons have different energies.
• C. he speeds of both the photons in vacuum are different
• D. he frequency of X-ray photon is higher than the frequency of visible radiation photon.