Wire Transfers Represent a "Real-Time Transfer of Account Balances

Wire transfers represent a "real-time transfer of account balances." This implies that:

A) there is no availability float
B) there is no charge to the user because no time is involved in the transfer processing
C) there is very large dual balances in the "transferred from" and "transferred to" accounts
D) the user does not have to keep compensating balances or reserve requirements for deposit accounts from which the transfer takes place