Transverse momentum distributions d$N/$d$\pt$ of prompt $\Dzero$ (a), $\Dplus$ (b) and $\Dstar$ (c) mesons in the 30-50% centrality class in Pb-Pb collisions at $\snn=2.76 \rm TeV$. The pp reference distributions $\langle\rm {T_{AA}}\rangle \rm {d}\sigma/\rm{d}\pt$ are shown as well. Statistical uncertainties (bars) and systematic uncertainties from data analysis (empty boxes) and from feed-down subtraction (shaded boxes) are shown. Horizontal bars represent bin widths, symbols are placed at the centre ofthe bin The d$N/$d$\pt$ distributions of the three D-meson species in Pb-Pb collisions in the 30-50% centrality class are compared to each other inpanel (d), where the $\Dstar$ production yields are scaled by a factor of five for visibility