What Does It Mean That the Fugitive Slave Clause Accorded

What does it mean that the fugitive slave clause accorded slave laws "extraterritoriality"?

A) If a slave owner moved with his slaves to a state where slavery was abolished, he could still hold slaves.
B) If a fugitive managed to cross state lines, he or she would no longer be considered a slave, but rather a free person with all the rights of someone who was born free.
C) The Supreme Court would follow a standard procedure in returning slaves that had escaped across state lines to their owners.
D) It was the responsibility of masters to apprehend their runaway slaves.
E) The condition of bondage remained attached to the person even if he or she escaped to a state where slavery had been abolished.