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Which predefined roles should be assigned to a service account to provide least privilege access for reading data from Cloud SQL for SQL Server and updating a table in Cloud Spanner?
A
roles/cloudsql.viewer and roles/spanner.databaseUser
B
roles/cloudsql.editor and roles/spanner.admin
C
roles/cloudsql.client and roles/spanner.databaseReader
D
roles/cloudsql.instanceUser and roles/spanner.databaseUser