The search string below creates a table of the total count of mysterymeat corndogs split by user.
| stats count by user | where corndog=mysterymeat
The search string does the following:
* It uses the stats command to calculate the count of events for each value of the user field. The stats command creates a table with two columns: user and count.
* It uses the where command to filter the results by the value of the corndog field. The where command only keeps the rows where corndog equals mysterymeat.
Therefore, the search string creates a table of the total count of mysterymeat corndogs split by user.

Stacked charts represent a series in a single bar with multiple sections. A chart is a graphical representation of data that shows trends, patterns, or comparisons. A chart can have different types, such as column, bar, line, area, pie, etc. A chart can also have different modes, such as split-series, multi-series, stacked, etc. A stacked chart is a type of chart that shows multiple series in a single bar or area with different sections for each series

Reference: https://docs.splunk.com/Documentation/Splunk/8.0.4/SearchReference/Timechart

A macro is a way to save a segment of a search string as a variable and reuse it in other searches2. A macro can be followed by a pipe, which is a symbol that separates commands in a search pipeline2. A pipe may always follow a macro, regardless of who owns the macro, where the macro is defined or how the macro is shared2. For example, if you have a macro called us_sales that returns events from the US region, you can use it in a search like this: us_sales | stats sum(price) by product2. This search will use the macro to filter the events and then calculate the total price for each product2. Therefore, option A is correct, while options B, C and D are incorrect because they are not conditions that affect whether a pipe can follow a macro.

A report that is scheduled to run every 15 minutes but takes 17 minutes to complete is in danger of being
skipped or deferred2. This means that Splunk may skip some scheduled runs of the report if they overlap with
previous runs that are still in progress or defer them until the previous runs are finished2. This can affect the
accuracy and timeliness of the report results and notifications2. Therefore, option A is correct, while options
B, C and D are incorrect because they are not consequences of a report taking longer than its schedule interval.