Which of the Following Is NOT a Function of the Interbank

Which of the following is NOT a function of the interbank part of the foreign exchange market?

A) Provides a bank with a continuous stream of information on conditions in the foreign exchange market
B) Provides a bank the means to readjust its own position quickly and at low cost when it separately conducts a large trade with a customer
C) Permits a bank to take on a position in a foreign currency quickly if the bank and its traders want to speculate on exchange-rate movements in the near future
D) Provides clearing services for organizations that prefer to use different currencies