46. Which of the following statements about the 1H NMR (Nuclear Magnetic Resonance) experiment isincorrect?
(A)The energy difference between the two spin states (

= +1/2 and

=-1/2) depends on the strengthof the magnetic field.
(B)When energy absorption takes place, the electrons are excited by the electromagnetic radiation toobtain the NMR signal.
(C) When aligned with the magnetic field, the energy of a proton with spin of mi = +1/2 is lower thanthat with mi = -1/2 when aligned against it.
(D) The relative population of the upper spin state, Nupper, and of the lower spin state, Nlower, is given bythe Boltzmann equation (Nupper / Nlower = e-△E/kT).
(E) The energy needed to flip the spin of a proton is within the radio frequency range of theelectromagnetic spectrum.