Which of These Is Not a True Statement About the Wilmot

Which of these is not a true statement about the Wilmot Proviso?

A) It stipulated that slavery be prohibited in any territory acquired in the war with Mexico.
B) It was designed to hold Polk to what many perceived as an understanding: Texas would be for slaveholders; California and New Mexico for free labor.
C) It was strongly supported by southern Democrats.
D) It exposed deep sectional divisions that Americans had been previously able to overlook.
E) It passed in the House but not in the Senate and never became law.