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How can a company minimize database downtime for an online shopping application using Amazon RDS for PostgreSQL without altering application code?
A
Modify the existing instance to Multi-AZ deployment.
B
Create a new Multi-AZ deployment from a snapshot of the current instance.
C
Establish a read-only replica in another AZ and balance requests with Route 53.
D
Implement the database in an EC2 Auto Scaling group and balance requests with Route 53.
