Answer:
Mrs. Stevenson becomes more and more irritated that people do not understand her
Explanation:
Mrs. Stevenson is a lady who is disabled in her bed and only has the telephone within her reach. She is totally flustered and nervous and realizes that she could be the person who is gonna be killed.
Coincidence is not a form of irony. Sarcasm obviously is, Dramatic is when the reader/viewer knows more than the character in the plot. Situational irony is when the opposite of what's expected happens, and Coincidence is not an irony.
Cool but is this your question?
The answer to your question is,
A. Expository
-Mabel <3