单项选择题
YouaretheCiscoNetworkDesignerinCisco.com.Youaredesigningane－Commercemodule，whichroutingstatementiscorrect？（）
A.Routingismostlystatic.
B.HardcodedIPaddressesareusedtosupportfailover.
C.InboundserversusetheCSMorACEasthedefaultgateway.
D.VLANsbetweentheaccesslayerswitchesareusedforFHRPprotocols.