A System p administrator suspects they are receiving an error from one of their nightly cron jobs. The  job is： 0 1 * * * /usr/local/bin/nightlycheck.pl Where should the administrator first look for errors reported by  this cron job（）

• A、/var/log/syslog.out
• B、var/log/cron.log
• C、/var/spool/cron/logs
• D、mail