How does Douglass put an end to Covey's brutal treatment of him?

A.

He hides in a cornfield when Covey is seeking him to whip him.

B.

He gets a root to carry in his right pocket to keep Covey from striking him.

C.

He tries to work so well that Covey will have no reason to whip him.

D.

He attacks Covey and beats him severely enough that Covey fears for his reputation as a slave-breaker.