jaquiasanders7 jaquiasanders7 12-07-2021 Social Studies contestada Which is true about the Wilmot Proviso? A. The proviso failed in the Senate and the House of Representatives. B. The proviso was passed by the Senate and the House of Representatives. C. The proviso would have allowed slavery in the territories won during the Mexican-American War. D. The proviso would have banned slavery in the territories won during the Mexican-American War.