Which of the Following Was a Consequence of the Wilmot

Which of the following was a consequence of the Wilmot Proviso?

A) It transformed the debate over the War with Mexico into a debate over the expansion of slavery.
B) It led to the annexation of Texas by joint resolution of Congress.
C) Its stipulations further fed northern fears of the Slave Power.
D) It caused southerners to become outspoken opponents of the War with Mexico.