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You're a database administrator noticing that a Cloud SQL database with PostgreSQL isn't meeting its read operation SLAs. Your goal is to enhance read performance with minimal application changes. Which strategy should you consider first?
A
Utilize Cloud Memorystore to cache data intended for reading.
B
Implement change data capture to synchronize a secondary database in another region with the primary, directing read operations to the secondary.
C
Create a read replica to handle read operations.
D
Analyze and optimize queries using PostgreSQL's explain plan feature.
