Can you explain how verbal and situational irony is used in the short story The Gift of the Magi?

Verbal irony is seen in the couple's sacrifice of their most prized possessions that ultimately become useless; Jim sells his watch to buy combs for DELLa's hair, but she has cut her hair to buy a chain for his watch. Situational irony is present in the couple's sacrificial actions, as they both make choices that render the other's gift impractical. Together, these ironic elements underscore the theme of selfless love and the unexpected outcomes of their sacrifices.