How often will this cron job run?

View the cron job example below. How often will this cron job run?
0 */ 5 * * * command

A.
every 5 minutes

B.
every 5 hours

C.
every 5 days

D.
every 5th month

Explanation:
Execute a cron job every 5 Hours
The second field is for hours. If you specify * in this field, it runs every hour. If you specify */5 in the
2nd field, it runs every 5 hours as shown below.
0 */5 * * * /home/ramesh/backup.sh