Read this excerpt from The Narrative of the Life of Frederick Douglass. [Mrs. Auld] had bread for the hungry, clothes for the naked, and comfort for every mourner that came within her reach. Slavery soon proved its ability to divest her of these heavenly qualities. Under its influence, the tender heart became stone, and the lamblike disposition gave way to one of tiger-like fierceness. The first step in her downward course was in her ceasing to instruct me.

What inference can be drawn about Mrs. Auld in this excerpt?

Her inability to help the poor frustrates her.
She is sympathetic to the plight of enslaved persons.
Her attitude and behavior change as a slaveholder.
She is a strict teacher who does not forgive students.