UPSC Civil Services 2019 Prelims General Studies Paper I

Encyclopedia Britannica: In the 15th and 16th centuries, during the Columbian Exchange: numerous plants, animals, and microbes from old world (Europe, Asia, and Africa) were introduced to the new world (Americas) and vice versa. From the image given in the link, it's evident that Cocoa and Tobacco were introduced from new world to old world so only A fits.