Which of the Following Is an Example of a Medication

Which of the following is an example of a medication error?

A) The wrong dose of a medication is drawn up,but is caught and corrected prior to administration.
B) A medication is administered to a patient with no allergies,yet an anaphylactic response occurs.
C) A medication is administered in liquid form instead of tablet form due to the patient's difficulty swallowing.
D) A patient experiences unexpected hypotension as a result of medication administration.