A Database Specialist is troubleshooting an application connection failure on an Amazon Aurora DB cluster with multiple Aurora Replicas that had been running with no issues for the past 2 months. The connection failure lasted for 5 minutes and corrected itself after that. The Database Specialist reviewed the Amazon RDS events and determined a failover event occurred at that time. The failover process took around 15 seconds to complete. What is the MOST likely cause of the 5-minute connection outage?

Topic #: - All AWS Certified Database - Specialty Questions

A. After a database crash, Aurora needed to replay the redo log from the last database checkpoint
B. The client-side application is caching the DNS data and its TTL is set too high
C. After failover, the Aurora DB cluster needs time to warm up before accepting client connections
D. There were no active Aurora Replicas in the Aurora DB cluster

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