某工程師有一個名爲 UCS-A 的主結構和一個名爲 UCS-B 的輔助結構。需要爲名爲 kr2016 的密鑰環創建主題名爲 sjc2016 的證書請求。羣集 IP 地址爲 10.68.68.68。哪個命令集可創建此證書請求?
A. CS-A # scope keyring kr2016 UCS-A /keyring # create certreq 10
B. CS-B # scope keyring kr2016 UCS-B /keyring # create certreq ip 10
C. CS-B# scope security UCS-B /security # scope keyring kr2016 UCS-B /security/keyring # set certreq 10
D. CS-A# scope security UCS-A /security # scope keyring kr2016 UCS-A /security/keyring # create certreq ip 10