Regarding the Issue of Slavery,the Constitution

Regarding the issue of slavery,the Constitution

A) denounced it as being inconsistent with the rights of man and called for its eventual elimination, though it did not specify clearly how or when this was to be done.
B) gave slavery legitimacy and support.
C) made no mention of slavery, with the hope, apparently, that the individual states would deal with it if they saw it as a problem.
D) required that the slave trade be immediately banned with all slavery to be abandoned in twenty years.