Quiz: what a process is doing

Read the output

What will you check first after seeing this line?

openat(AT_FDCWD, "/etc/app/app.conf", O_RDONLY|O_CLOEXEC) = -1 EACCES (Permission denied)

• A Whether the file is in place.
• B Free disk space — df -h.
• C The file's permissions and owner — ls -l /etc/app/app.conf.