According to the study by Cole and Ohanion, which of the following is an explanation for why the Depression lasted from 1936-1943?
A) The National Relations Act weakened unions and let nominal wages fall.
B) The government did not sufficiently increase government spending.
C) The National Industrial Recovery Act exempted many businesses from anti-trust legislation allowing them to keep their prices high.
D) The government did not sufficiently step in to help out struggling businesses.