You deployed a new application to Google Kubernetes Engine and are experiencing some performance degradation. Your logs are being written to Cloud Logging, and you are using a Prometheus sidecar model for capturing metrics. You need to correlate the metrics and data from the logs to troubleshoot the performance issue and send real-time alerts while minimizing costs. What should you do?

【单选题】
A Create custom metrics from the Cloud Logging logs, and use Prometheus to import the results using the Cloud Monitoring REST API
B Export the Cloud Logging logs and the Prometheus metrics to Cloud Bigtable. Run a query to join the results, and ananlyze in Google Data Studio
C Export the Cloud Logging logs and stream the Prometheus metrics to BigQuery. Run a recurring query to join the results, and send notifications using Cloud Tasks.
D Export the Prometheus metrics and use Cloud Monitoring to view them as external metrics. Configure Cloud Monitoring to create log-based metrics from the logs, and correlate them with the Prometheus data.

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