n his $1857$ speech on the Dred Scott decision, which of the following did Abraham Lincoln say was true of the American founders?

The fact that they allowed slavery shows that the founders did not really mean it when they said that "all men are created equal."

The founders knew that slavery contradicted the principles of the Declaration of Independence, but did not believe they could end the institution immediately.

The fact that some founders had slaves shows that they did not understand slaves to be human beings in the same sense that they, the founders, were human beings.

The founders meant to include only white adult male property owners among the "men" who were "created equal.