How can virtual machines be moved between datacenters?

A.
High-Availability failover

B.
Cold migration

C.
vMotion migration

D.
Storage vMotion migration

Explanation:
http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.vcenterhost.doc%2FGUID-3EE13ED8-172F-4560-B806-1E342AD7C486.html