Which best explains why California’s application for statehood caused a sectional crisis?

ACalifornia’s entrance as a free state would upset the legislative balance in favor of the North.

BCalifornia’s entrance as a slave state would upset the legislative balance in favor of the South.

CCalifornia’s entrance as a slave state would cause free African Americans there to lose their freedom.

DCalifornia’s entrance as a free state would cause enslaved people there to be freed automatically.