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Here is another question that I would say the answer is just wrong…
The question states the database is running on an ec2 instance in the primary region. This means that in the backup region the database would also be on an ec2 instance. The “correct” answer indicates that all instances are scaled-down. In order for the database to replicate it would need to be in an up state. Scaled-down in this context could only mean it is on a reduced instance type. An autoscaling group would not apply here to the single database instance. Given the requirement of RTO of 5 min, it would be virtually impossible to fail over from the primary, stop the database, resize the instance, start it up all in under 5 mins. If your intention is that the database is not scaled down, you need to indicate as such or it makes the second answer correct not the third. I would even argue that the second question is phrased poorly since it doesn’t mention promotion of the database.
