Which of the tollowmg statements are correct? I] A phonon does not carry a linear momentum because an oscillating atom does not carry a linear momentum. I:l A phonon does not carry a linear momentum because the linear momenta of the oscillating atoms producing the lattice wave cancel each other' resulting overall in a zero momentum CI The wave vector of a phonon describes the propagation direction and the wavelength of the lattice wave. CI The wave vector of a phonon describes the propagation direction and amplitude of the lattice wave. I] In an inelastic neutron scattering experiment involving phonons, only the energy is conserved, but not the linear momentum I] In an inelastic neutron scattering experiment involving phonons, the phonons can be treated as quaSIparticles With a speCific energy and momentum. In this picture the scattering process involvmg neutrons and phonons conserves energy and momentum