You got a notification about error that occurred on a production environment. The merchant gave you the error identifier

[answerhappygod]

You got a notification about error that occurred on a production environment. The merchant gave you the error identifier.
How do you find the error message based on the identifier?

A. An error is written to the var/log/exception.log file including the identifier
B. The error is sent to the pre-configured error email with the identifier in the subject
C. A file with a name matching the identifier is written to the var/report folder
D. An error message is written to the database table error_log with an error_id field matching the identifier