Your company has an application running on Google Cloud that is collecting data from thousands of physical devices that are globally distributed. Data is publis...

Your company has an application running on Google Cloud that is collecting data from thousands of physical devices that are globally distributed. Data is published to Pub/Sub and streamed in real time into an SSD Cloud Bigtable cluster via a Dataflow pipeline. The operations team informs you that your CloudBigtable cluster has a hotspot, and queries are taking longer than expected. You need to resolve the problem and prevent it from happening in the future. What should you do?

A. Advise your clients to use HBase APIs instead of NodeJS APIs. B. Delete records older than 30 days. C. Review your RowKey strategy and ensure that keys are evenly spread across the alphabet. D. Double the number of nodes you currently have.