How did tariffs negatively affect the global economy during the great depression?

How did tariffs negatively affect the global economy during the great depression?
a. they reduced the need to produce goods at home, leading to overreliance on imported goods.
b. they isolated countries' economies, drastically reducing international trade.
c. they discouraged factories from producing due to the lack of international competition.
d. they successfully raised demand on goods produced at home, which led to higher prices.