Photon A has twice the wavelength of photon B. Which statement correctly compares their frequencies and energies?
a) Photon A has twice the frequency and twice the energy of photon B.
b) Photon A has half the frequency but the same energy as photon B.
c) Photon A has half the frequency and half the energy of photon B.
d) Photon A has twice the frequency but half the energy of photon B.