Which search matches the events containing the terms "error" and "fail"?

Which search matches the events containing the terms "error" and "fail"?
A . index=security Error Fail
B . index=security error OR fail
C . index=security “error failure”
D . index=security NOT error NOT fail

View Answer

Answer: A

Explanation:

Reference: https://docs.splunk.com/Documentation/Splunk/7.3.1/SearchReference/Search