What did the Missouri compromise accomplish?

Question

It kept the number of free states and slave states equal by bringing in Missouri and Maine into the union
It kept the number of free states and slave states equal by bringing in Missouri and California into the union
It stated that land acquired in the Louisiana purchase, would have the right to decide whether or not they wanted it slavery
Regarded all territory gained in the Mexican cession as Freeland

Answer 1

It stated that land acquired in the Louisiana purchase would have the right to decide whether or not they wanted slavery.