Given the following crontab entry, when will the job run? 30 5 * 9 * /usr/local/bin/maintenance
A. Every day in September at 05.30
B. Every day at 05.00 and 09.00 for 30 days
C. Every 30 minutes for the first 5 days in September
D. Only on the 30th of May in 9 minute intervals
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