iF thE DistriBution oF A ConstruCtion is FunCtionAlly EquivAlEnt to thAt oF onE or morE oF its ConstituEnts, thE ConstruCtion is CAllED ______.
A．ExoCEntriC ConstruCtion
B．EnDoCEntriC ConstruCtion
C．immEDiAtE ConstruCtion
D．ContriButivE ConstruCtion