Suppose a Bank Customer Wishes to Trade Out of British

Suppose a bank customer wishes to trade out of British pounds and into Swiss francs.

A) In dealer jargon, this is a currency against currency trade.
B) The bank will frequently handle such a trade by selling British pounds for U.S. dollars and then buying Swiss francs with U.S. dollars.
C) The bank would typically sell the British pounds directly for Swiss francs.
D) Both a and b