单项选择题
WhatisonereasonthecustomershouldinstallIBMDS8000VirtualPrivateNetwork(VPN)technologyfortheCallHomefunction()
A.toavoidusingamoreexpensivedial-upmodem
B.toloadnewlicensedinternalcode
C.toachievemoreefficientandfasterproblemresolution
D.toenablecapacityondemand