Read the passage from "The Tell-Tale Heart.”

It is impossible to say how first the idea entered my brain; but once conceived, it haunted me day and night. Object there was none. Passion there was none. I loved the old man. He had never wronged me. He had never given me insult. For his gold I had no desire. I think it was his eye! yes, it was this! He had the eye of a vulture—a pale blue eye, with a film over it.

The best summary of the internal conflict in the passage is that the narrator

is confused by his affection for the old man.
struggles with his decision to kill the old man.
is confused by the old man’s mistreatment of him.
struggles with his desire for the old man’s wealth.