An administrator needs to upgrade a Veritas Enterprise Vault 11.0 server installed on a Windows server 2008 R2 platform to Veritas Enterprise Vault 12.x. Which initial steps are required to upgrade the environment?
A. run EVSVR, then run the Veritas Enterprise Vault 12.x installer
B. upgrade to Veritas Enterprise Vault 11.0.1 first, then run the Veritas Enterprise Vault 12.x installer
C. use the Server Settings Migration Wizard
D. upgrade to Veritas Enterprise Vault 11.0.1 first, then use the Server Settings Migration Wizard