When VMware vSphere CBT is not available, Veeam Backup & Replication:

When VMware vSphere CBT is not available, Veeam Backup & Replication:
A . Uses Veeam’s proprietary filtering mechanism
B . Sends an e-mail alert that VMware vSphere CBT is disabled
C . Resets VMware vSphere CBT which requires to power the VM off
D . Runs a new active full backup

Answer: A