How is the old smith in "Honest Work" different from the king's groom in "For Want of a Horseshoe Nail"?

A.
The old smith is a cheerful and kind, while the king's groom is glum and rude.

B.
The old smith cares more about money and social standing than the king's groom.

C.
The old smith is rather selfish, while the king's groom shows great concern for others.

D.
The old smith is patient and exacting, while the king's groom is rash and careless.

and

How are the speaker of "Mother to Son" and the narrator in "Letter to His Son" different?

A.
Only the narrator has a child who is very successful and needs little instruction.

B.
Only the narrator is addressing a child who has disappointed him and needs guidance.

C.
Only the speaker cites her own behavior as an example for her son to follow.

D.
Only the speaker wants her son to understand the importance of duty.