According to the article by Jack Weatherford, "Cocaine and the Economic Deterioration of Bolivia,"

a. cocaine production hurt the economy of Bolivia due to inflation but benefitted subsistence farmers by making them rich from selling cocaine.
b. cocaine production hurt the economy of Bolivia due to inflation and hurt subsistence farmers because young men were disfigured in cocaine production.
c. cocaine production benefitted subsistence farmers in Bolivia by teaching them new farming techniques.
d. the money from cocaine production goes to regular Bolivians.