Which of the following statements best represents the desires of the northern states during the debate of missouri statehood?

the northern states were not concerned with the admission of missouri into the united states.
northern voters supported the institution of slavery growing in the western states.
the faction of voters in the north believed that all states had the right to decide for themselves whether they would have slavery or not.
the faction of voters in the north were against slavery and feared it spreading into new territory.