Which phrase refers to the contrast between what is expected to happen and what actually does happen? situational irony dramatic irony verbal irony conflict and resolution

Situational irony The phrase that refers to the contrast between what is expected to happen and what actually does happen is a situational irony. Irony is a figure of speech or a literary technique in which a certain phrase or statement has a two-way implication. There are three types of irony which is verbal irony or sarcasm, dramatic irony and situational irony. Furthermore, in the context of situational irony, here are some examples: 1.   The fire station burns down
2.   A psychologist doesn’t like people
3.   Wants to lose weight but eats a lot  

Ok uhh exactly why is the question here