The fields sidebar is a panel that shows the fields that are present in your search results2. The fields

sidebar has two sections: selected fields and interesting fields2. Selected fields are fields that you

choose to display in your search results by clicking on them in the fields sidebar or by using the fields

command2. Interesting fields are fields that appear in at least 20 percent of events or have high

variability among values2. For each field in the fields sidebar, you can select one of the following

options: events with this field, rare values, top values by time or top values2. If you select rare

values, Splunk will automatically pipe your search results to the rare command, which shows the

least common values of a field2. Therefore, option B is correct, while options A, C and D are incorrect

because they do not pipe your search results to the rare command.