Prompt D-meson $\Raa$ (average of $\Dzero$, $\Dplus$ and $\Dstar$) as a function of $\pt$ compared to the nuclear modification factors of pions and charged particles in the 0-10% (left) and 30-50% (right) centrality classes. Statistical (bars), systematic (empty boxes), and normalisation (shaded box at $\Raa=1$) uncertainties are shown. Horizontal bars represent bin widths. Symbols are placed at the centreof the bin.