Read the excerpt from act 2 of A Doll's House. Rank: The bigger a thing it is the better. I can't conceive what it is you mean. Do tell me. Haven't I your confidence?

Nora: More than anyone else. I know you are my truest and best friend, and so I will tell you what it is. Well, Doctor Rank, it is something you must help me to prevent. You know how devotedly, how inexpressibly deeply Torvald loves me; he would never for a moment hesitate to give his life for me.

Rank: [leaning towards her] Nora—do you think he is the only one—?

Nora: [with a slight start] The only one—?

Rank: The only one who would gladly give his life for your sake.

Nora: [sadly] Is that it?

Rank: I was determined you should know it before I went away, and there will never be a better opportunity than this. Now you know it, Nora. And now you know, too, that you can trust me as you would trust no one else.

Nora: [rises, deliberately and quietly] Let me pass.

What inference does this excerpt best support?

Nora realizes that she can no longer ask Doctor Rank for help because he is in love with her.
Nora realizes that she can trust only Doctor Rank because he has confessed his love for her.
Doctor Rank is willing to risk his life for Nora because he wants to compete with Helmer.
Doctor Rank has confessed his love because he thinks that doing so will help her with her problem.