HELP ME ASAP!! PLEASE!!

What could be a reason for the average colonist’s wealth in the Southern Colonies being so much higher than that of the New England and the Middle Colonies? A Land in the Southern Colonies had a much higher value than land in the Middle and New England Colonies. B Southerners relied heavily on cheap or free labor. C Their abundant tobacco crops were in greater demand than other colonial crops. D Southerners exported most of their livestock to other colonies.