Which incident taken from O’Connor’s “The Life You Save May Be Your Own” is the best example of irony?

Irony occurs when events turn out in a way that contrasts with what someone expects. Mrs. Crater believes she is gaining a son-in-law, but Mr. Shiftlet exploits her, takes the car and money, and abandons Lucynell. That reversal makes A the clearest example of irony; the other choices describe events without the same sharp contrast between expectation and outcome.

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