Yes because it is informal
I think 21 is the third choice, 23 is the first choice, 25 is the third choice, and 26 is the fourth choice.
This is an example of D. irony.
Irony is when you say something which is actually the opposite of what you think, in order to make a funny statement. So, this person said the doctor was unusually prompt (which means punctual, someone who always arrives on time), even though he was half an hour late. <span />