The correct answer is B) False.
It is false that Irony of tone occurs when an event takes place in a setting that is exactly the opposite of the setting we usually expect for such an event.
When we are talking about the irony of tone, we refer to the loudness, duration, or pitch of the voice pattern, and after you say something, the contrary happens of what you originally expected.
So when an author or a speaker uses irony it is going to use the kinds of words that means something different than the original meaning of those words.
In literature, there are three commonly used types of ironies. These are dramatic, verbal, and situational.