Please help me i’ll mark you How did the Dred Scott case contribute to tensions before the Civil War?

A
The case enraged those who supported slavery because it ended the equal representation of free and slave states in Congress.
B
The case enraged southern states because it freed slaves that traveled to free states.
C
The case enraged northern states because it resulted in the passage of the Fugitive Slave Act.
D
The case enraged those opposed to slavery because it claimed that free blacks were not citizens.