Which two vDisk states allow a Citrix Engineer to make permanent changes to a VDisk? (Choose two.)

Which two vDisk states allow a Citrix Engineer to make permanent changes to a VDisk? (Choose two.)

A. Production version
B. Test version

C. Private mode

D. Maintenance version

E. Standard mode

Reference: https://docs.citrix.com/en-us/provisioning/7-1/pvs-vdisks-lifecycle-wrapper/pvs-vdisks-update-wrapper.html