Toxicological Trivia from January 25, 2012: "Paco" or "drug of the poor". "This is the Argentines name to a drug composed of scraps from the production of cocaine, most highly tóxic. United Nations refered, the consumption of this substance increased by 200% in Argentina in the last four years (2004-2007), an increase that exceeds that of other Latin American countries. This news, in  our website in July/2007, was from:a) Elmundo.es;b) BBC world;c) Deutsche Welle in Spanish.

Correct answer b. Read more with Spanish news: epidemic of paco in Argentina