Which of the below mentioned conditions won't take advantage of the Multi AZ feature?

Which of the below mentioned conditions won’t take advantage of the Multi AZ feature?

A user is planning to set up the Multi AZ feature of RDS.

Which of the below mentioned conditions won’t take advantage of the Multi AZ feature?
A . Availability zone outage
B . A manual failover of the DB instance using Reboot with failover option
C . Region outage
D . When the user changes the DB instance’s server type

Answer: C

Explanation:

Amazon RDS when enabled with Multi AZ will handle failovers automatically. Thus, the user can resume database operations as quickly as possible without administrative intervention. The primary DB instance switches over automatically to the standby replica if any of the following conditions occur: