Which of the Following Is an Example of a Difficulty

Which of the following is an example of a difficulty in listening comprehension?

A) not hearing what the ER doctor says because an ambulance outside is blaring its siren
B) not understanding what the ER doctor means when he says you are suffering from hypertension
C) not hearing what the ER doctor says over the conversation and cries of pain in the waiting area
D) not listening to what the ER doctor says because you're distracted by the new patient who's just been wheeled into the room
E) not understanding what the ER doctor says because you have a head cold and your ears are clogged