A Unique Feature of Slavery in the Mid-Atlantic Colonies Was

A unique feature of slavery in the Mid-Atlantic colonies was that

A) the region's Quaker colonists began to debate the morality of slavery and to launch an antislavery movement earlier than colonists elsewhere.
B) the abundance of food produced in the region ensured that most of the black population was well-fed,and health problems related to malnutrition were rare.
C) the cold climate killed off most germs,leaving northern slaves free from afflictions such as measles and whooping cough which devastated slave populations in more southern regions.
D) slaves in the Mid-Atlantic worked almost exclusively in artisanal trades,while the large farms of the Hudson Valley were worked almost entirely by white laborers.