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What steps should you take to address high read latency in a global chat application using a multi-regional Cloud Spanner instance after a recent deployment caused degraded performance?
A
Use query parameters to speed up frequently executed queries.
B
Change the Cloud Spanner configuration from multi-region to single region.
C
Use SQL statements to analyze SPANNER_SYS.READ_STATS* tables.
D
Use SQL statements to analyze SPANNER_SYS.QUERY_STATS* tables.
