Which of these happened before the Dred Scott v. Sanford case was brought before the Supreme Court?

А
Roger Brooke Taney ruled that Congress had no authority to prohibit slavery in new
territories, making the Missouri Compromise unconstitutional.
B. Roger Brooke Taney read the Supreme Court opinion, which stated that slaves were not
citizens of the United States.
C. Dred Scott and his wife Harriet were taken from Missouri into territory where slavery had
been abolished.
D. Dred Scott's case stunned and incensed many abolitionists and became a catalyst for
the Civil War.