$5\mathrm{.}12.$ BGP: importing advertisements. Consider the network below, and assume that a provider network only wants to carry traffic to or from its customer networks. Which of the following statements are true $($Hint: more than one statement is true$)?$

provider network

legend:

customer network:

D will receive an advertisement $Cx.$

D will forward an advertisement for a path that terminates at $x$ to $w.$

D will receive an advertisement $Bx.$

D will forward an advertisement for a path that terminates at $x$ to $z.$

D will receive an advertisement ABx.