What is the search query result if the vRealize Log Insight regular expression “(A|b|c)” is used?

What is the search query result if the vRealize Log Insight regular expression “(A|b|c)” is used?
A. A or b and c
B. A and b or c
C. A or b or c
D. A and b and c

ANSWER: C
Explanation:
Reference: https://docs.vmware.com/en/vRealize-Log-Insight/8.2/log-insight-users-guide.pdf