Average $\RAA$ of D mesons in the 0-20% centrality class compared to: left, the expectation from NLO pQCD [46] with nuclear shadowing [48]; right, the nuclear modification factors of charged particles [19] and non-prompt $\rm J/\psi$ from B decays [25] in the same centrality class. The charged particle $\RAA$ is shown only for $2< \pt< 16 \gev/c$. The three normalization uncertainties shownin the right-hand panel are almost fully correlated.