ACCorDing to this pAssAgE, vArious typEs oF pACkAging ComE into ExistEnCE to ______.
A．mEEt thE nEEDs oF ConsumErs
B．suit All kinDs oF proDuCts
C．EnhAnCE thE mArkEt position oF proDuCts
D．introDuCE nEw proDuCts