In the Dred Scott case, the Supreme Court decided

Athe Compromise of 1850 was illegal because it was illegal for Congress to deprive a slave owner of property (slaves) without

the due process of law.

Bthe Missouri Compromise was illegal because it was illegal for Congress to deprive a slave of his or her freedom if they lived

in the South.

Cthe Missouri Compromise was illegal because it freed slaves in the slave states.

Dthe Missouri Compromise was illegal because it was illegal for Congress to deprive a slave owner of property (slaves) without

the due process of law.