In a four site indexer cluster, which configuration stores two searchable copies at the origin site, one searchable copy at site2, and a total of four searchable copies?

A. site_search_factor = origin:2, site1:2, total:4
B. site_search_factor = origin:2, site2:1, total:4
C. site_replication_factor = origin:2, site1:2, total:4

D. site_replication_factor = origin:2, site2:1, total:4

Reference: https://docs.splunk.com/Documentation/Splunk/7.3.2/Indexer/Sitereplicationfactor