Why Did Franklin D Roosevelt Take the United States Off

Why did Franklin D Roosevelt take the United States off the gold standard?

A) He and other New Dealers argued that the gold standard had been a straitjacket making the depression worse for the US.
B) He was hoping that the United States might export itself out of the depression.
C) Roosevelt had wanted to remain on the gold standard, but Republicans in Congress forced him to do so.
D) Maintaining the gold standard during the Hoover years had led to a constant outflow of dollars into foreign currency markets.