The correct answer is C.
In his autobiograph "My Bondage and My Freedom" Frederick Douglass was living in Baltimore, Maryland. He lived with his new master, Hugh Auld, a ship carpenter and brother of Thomas Auld, and his wife.
Unlike on the plantations, where he was treated like a pig, in the house he was treated like a child. Auld's wife even try to teach him how to read until her husband stopped her because he believed slaves should know nothing but the wills of their masters.