Read the following context and choose the best option to answer the question.
Context: We stopped by Aunt Bess 's house and she gave me a dose of the cure - all castor oil . Now castor oil is NASTY and if you were n't sick before , it would make you sick , believe me ! That dose of castor oil must have been a real cure because I did n't get sick at school again .
Question: Why does Aunt Bess prefer to use castor oil as a curative agent for sickness ?
Options: 
A. She believes in folk cures , and prefers to prescribe them whenever she can
B. None of the above choices .
C. She is a medical researcher , and has discovered the many health benefits of the concoction
D. She works as a salesperson for a castor oil company and is recommending her products


A