Where are KPI search results stored?

[Reference: https://docs.splunk.com/Documentation/ITSI/4.10.2/SI/BaseSearch, D is the correct answer because KPI search results are stored in the itsi_summary index in ITSI. This index is an events index that stores the results of scheduled KPI searches. Summary indexing lets you run fast searches over large data sets by spreading out the cost of a computationally expensive report over time. References: Overview of ITSI indexes]