* To add item for monster with random option group, see 'db/[pre-]re/mob_drop.txt'
* To add item random option group with random option group, see 'db/[pre-]re/mob_item_randomopt_group.txt'
* Default entries for random options are follow iRO Crimson/Scarlet Weapon based on
  * "[Renewal] Episode 15.2 Crimson Weapon System", see http://www.playragnarok.com/news/updatedetail.aspx?id=280&p=1.
  * File uploaded by Oda (iRO's CM) on https://forums.warpportal.com/index.php?/topic/168763-fansitedb-information-distribution-and-request-station/?p=2495922

Signed-off-by: Cydh Ramdh <cydh@pservero.com>