$v_{2}$ as a function of $\pt$ for prompt $\Dzero$, $\Dplus$ and $\Dstar$ mesons for Pb-Pb collisions in the centrality range 30-50%. The central value was obtained with the assumption $v_2^{\rm feed-down}=v_2^{\rm prompt}$. Vertical error bars represent the statistical uncertainty, empty boxes the systematic uncertainty due to the D meson anisotropy measurement and the event-plane resolution, and shaded boxes show the uncertainty from the contribution of D mesons from B feed-down.