Which statement best explains the relationship between the economy of the South and the North?

The South provided raw materials to the North, and the North provided finished factory goods to the South.
The North provided agricultural goods to the South, and the South provided industrial goods to the North.
The South traded goods with Europe and throughout the Caribbean, and the North traded exclusively with the South.
The South (especially the slaves) did most of the labor-intensive work and the North did the work that required education.