The Mexican Peso Crisis Was Touched Off by

The Mexican Peso Crisis was touched off by

A) an unsurprising announcement by the Mexican government to devalue to peso against the dollar by 14 percent.
B) an unexpected announcement by the Mexican government to devalue to peso against the dollar by 14 percent.
C) an announcement by the Mexican government to enact a currency board arrangement with the U.S. dollar.
D) contagion from other Latin American and Asian financial markets.