Why is the following text from The Proposal considered "verbal irony"?

Last updated: 7/5/2022

Why is the following text from The Proposal considered "verbal irony"? 32: LOMOV: No, you're mistaken, honoured Natalya, they're mine. A. Lomov is mocking Natalya by calling her "honoured" when she is not acting honorable. B. The audience expects Lomov to concede that the land is not his and propose, but he does not. C. The audience knows Natalya does not own the land and is stalling to prevent Lomov from proposing. D. The audience knows that Natalya is not mistaken and the land really is hers.