Which of the Following Would a Follower of the Inefficient

Which of the following would a follower of the inefficient market school of thought agree with?

A) Companies would be better off investing in foreign exchange forecasting services.
B) Forward exchange rates do the best possible job of forecasting future spot exchange rates.
C) Companies can optimize their foreign exchange transactions by using forward markets.
D) Forward rates reflect all available information about likely future changes in exchange rates.