Read the following context and choose the best option to answer the question.
Context: Exhaustion had rooted itself deep in her bones and the last few days , no matter how much she slept , she could n't shake it . She 'd woken up that morning with a headache and struggled with it most of the day . She could n't take anything because no one knew how any kind of medicine would affect her . Besides , taking something meant admitting to someone in her family that she did n't feel good .
Question: What may be the reason why she ca n't take medicine for the headache ?
Options: 
A. She has a condition that may affect how the medicine works or does n't work for her .
B. She does n't believe in medicine .
C. Her family does n't believe in medicine .
D. She is used to her headaches and does n't need the medicine .


A