A Swap Bank

A swap bank

A) can act as a broker,bringing together counterparties to a swap.
B) can act as a dealer,standing ready to buy and sell swaps.
C) can act as a broker,bringing together counterparties to a swap and standing ready to buy and sell swaps.
D) only sometimes acts as a broker,bringing together counterparties to a swap,but never ever acts as a dealer,standing ready to buy and sell swaps.