thE Author mEntions suCh millionAirEs As thE roCkEFEllErs AnD Bill gAtEs to show thAt______.
A．thEy ArE ExAmplEs For us on our roAD to wEAlth
B．A portFolio is EssEntiAl to FinAnCiAl suCCEss
C．thEy ArE rEAlly riCh pEoplE
D．thEy stArtED out on thEir own