Which three sentences in this excerpt from Edgar Allan Poe’s “The Tell-Tale Heart” show that the narrator feels his crime will not be discovered?

This question is incomplete. Here is the complete question:

Which three sentences in this excerpt from Edgar Allan Poe’s “The Tell-Tale Heart” show that the narrator feels his crime will not be discovered?

When I had made an end of these labors, it was four o'clock—still dark as midnight. As the bell sounded the hour, there came a knocking at the street door. I went down to open it with a light heart,—for what had I now to fear? There entered three men, who introduced themselves, with perfect suavity, as officers of the police. A shriek had been heard by a neighbour during the night; suspicion of foul play had been aroused; information had been lodged at the police office, and they (the officers) had been deputed to search the premises.

I smiled,—for what had I to fear? I bade the gentlemen welcome. The shriek, I said, was my own in a dream. The old man, I mentioned, was absent in the country. I took my visitors all over the house. I bade them search—search well. I led them, at length, to his chamber. I showed them his treasures, secure, undisturbed. In the enthusiasm of my confidence, I brought chairs into the room, and desired them here to rest from their fatigues, while I myself, in the wild audacity of my perfect triumph, placed my own seat upon the very spot beneath which reposed the corpse of the victim.

The correct answers are:

1. For what had I to fear? I bade the gentlemen welcome.

2. I took my visitors all over the house. I bade them search.

3. I brought chais into the room, and desired them here to rest from their fatigues, while I myself, in the wild audacity of my perfect triumph, placed my own seat upon the very spot beneath which reposed the corpse of the victim.

Explanation:

  This question refers to the story "The tell tale heart" by Edgar Allan Poe.

Here a horror story is told where the conscience of the main narrator finally reveals the truth. This writer seeks to create a close relationship between the reader and the narrator, who seeks to justify his wrongdoing, giving very precise reasons for his main motives. But his own guilt exposed him.

When the narrator murders the old man, finally the guilt of "hearing his heart beating" ends up giving him away, and makes him lose his sanity completely.