whAt is thE rumor oF "BlACk CArD"
A．thE holDEr CAn spEnD FrEEly At thE BEst shops.
B．thE CrEDit CArD Allows holDErs to pAy thEir ChECk without CAsh.
C．thE holDErs CAn summon hEliCoptErs in DEsErt.
D．thE CrEDit CArD is vEry importAnt in AmEriCAn soCiEty.