Report acceleration has been enabled for a specific use case.

Report acceleration creates a separate summary of the data on the indexer, which is stored in a CSV file. The location of this file is determined by the summaryHomePath attribute in the indexes.conf file. By default, the summaryHomePath is set to $SPLUNK_DB//summary, where $SPLUNK_DB is the root directory for all index data. Therefore, the correct answer is B, summaryHomePath. References :=

Accelerate reports

Indexes.conf.spec