What could the developer do to correct this issue?

A developer has a sandbox with code to log a message during execution, and the following code:

After the code executes, the developer does not see any log file with the message in the WebDAV folder.

What could the developer do to correct this issue?
A . Set the root log level to debug AND check the box for info under Log Files.
B. Set the logging global preference to true AND set the root log level to debug.
C. Set the logging global preference to true AND check the box for Info under Log Files

Answer: C