Soon after the Columbian Exchange began, European ships carried potatoes from the Americas to Europe. Which was an intentional consequence of that action? A. Over a million Irish died in the famine that resulted when the Irish potato crop, the major source of food and income for Irish farmers, was destroyed by a blight. B. People in northern and western Europe started planting and eating potatoes as an important source of nutrition. C. Europeans boycotted potatoes as a means of showing their disapproval with the working conditions of native laborers. D. Potatoes replaced wheat and barley as profitable crops in central and southern Europe.