For a Majority of Northerners,the Most Outrageous Part of the Supreme

For a majority of northerners,the most outrageous part of the Supreme Court's ruling in the Dred Scott case was

A) that as a slave, Scott had no civil right to sue in federal court.
B) that Scott did not automatically become free when his owner took him through free states and territories.
C) that Congress had never had the power to prohibit slavery in any territory.
D) that Kansas and Nebraska would almost certainly become slave states.
E) that the Supreme Court was asserting its superiority to Congress and the president.