A User Has Enabled the Multi AZ Feature with the MS

Multiple Choice

A user has enabled the Multi AZ feature with the MS SQL RDS database server. Which of the below mentioned statements will help the user understand the Multi AZ feature better?

A) In a Multi AZ, AWS runs two DBs in parallel and copies the data asynchronously to the replica copy
B) In a Multi AZ, AWS runs two DBs in parallel and copies the data synchronously to the replica copy
C) In a Multi AZ, AWS runs just one DB but copies the data synchronously to the standby replica
D) AWS MS SQL does not support the Multi AZ feature