Read the excerpt from act 2 of A Doll's House . Rank: Let me play for her. Helmer [getting up] : Yes, do. I can correct her better then. [RANK sits down at the piano and plays. NORA dances more and more wildly. HELMER has taken up a position beside the stove, and during her dance gives her frequent instructions. She does not seem to hear him; her hair comes down and falls over her shoulders; she pays no attention to it, but goes on dancing. Enter MRS. LINDE:] Mrs. Linde: [standing as if spell-bound in the doorway] Oh!— Nora: [as she dances] Such fun, Christine! Helmer: My dear darling Nora, you are dancing as if your life depended on it. Nora: So it does. Helmer: Stop, Rank; this is sheer madness. Stop, I tell you! [RANK stops playing, and NORA suddenly stands still. HELMER goes up to her.] I could never have believed it. You have forgotten everything I taught you. Nora: [throwing away the tambourine]. There, you see. Helmer: You will want a lot of coaching. Nora: Yes, you see how much I need it. You must coach me up to the last minute. Promise me that, Torvald! Helmer: You can depend on me. Which statement best describes the dramatic irony in this passage?