In the Context of Bankruptcy Laws, an 'Unfair Preference' Is

In the context of bankruptcy laws, an 'unfair preference' is:

A) The payment by a debtor of amounts owed to one creditor at the expense of the other creditors.
B) A payment of money by the bankrupt to a person with a close connection to the bankrupt individual (e.g.a partner, spouse or child) in the four years prior to bankruptcy.
C) Any voidable transaction.
D) A transfer of property or payment to a related entity in the four years prior to bankruptcy.