either A or D,
depending on what the owner had in mind when he created it.
If the idea is to be a stand-alone profit-making operation I would say D is likely because it's too much of a target for sharps.
If the gossip is true, however, and the owner is filthy rich and some high up mafia guy from Asia, then it could be used for money laundering.
In this case A is likely since the mafia guy would be glad to let the sharps have their little juice in exchange for their unwitting co-operation in his money laundering activities. After a year of no slow pays and still great lines, fast software etc. it has to make the top 10.