Differential cross-sections and polarizations are calculated for photon laboratory energies up to 130 MeV. The calculations are carried out both for a 4% and a 6% deuteron D-state probability, and retardation effects are considered. The final state is described by the Y.L.A.M-Y.L.A.N. 3M phase parameters of Breit et al., and phenomenological wave functions are used throughout. The results are found not to be sensitive to the deuteron D-state probability, but to depend to a very marked extent on the omission or inclusion of retardation, even at low energies. Detailed comparison with experiment is made, and it is found that the results with 6% deuteron D-state probability, and with retardation included, give a significantly better fit over the whole energy range to the available data, than the other three cases.