Read the excerpt from act 2 of A Doll's House . Nora: [glancing at the card] Oh! [Puts it in her pocket.] Rank: Is there anything wrong? Nora: No, no, not in the least. It is only something—it is my new dress— Rank: What? Your dress is lying there. Nora: Oh, yes, that one; but this is another. I ordered it. Torvald mustn't know about it— Rank: Oho! Then that was the great secret. Nora: Of course. Just go in to him; he is sitting in the inner room. Keep him as long as— Rank: Make your mind easy; I won't let him escape. Which statement explains the dramatic irony in this passage?