Which of the Following Statements Is NOT True

Which of the following statements is NOT true?

A) The Gold Standard Era was characterized by growing openness in trade, but limited capital mobility.
B) The time period between World Wars I and II (the inter war years) witnessed significant reductions in trade barriers and a rapid acceleration in international trade.
C) The Bretton Woods Era (post WWII) realized the increasing benefits of open economies. Furthermore, trade was increasingly dominated by capital.
D) Since March 1973, exchange rates have become much more volatile and less predictable than previous periods.