Read the following context and choose the best option to answer the question.
Context: But he held on for a few months before the infection finally claimed him . Such a long time , I exclaimed , trying not to think too much about what it must ' ve been like to wither away slowly on that cot and wishing only for the delirium of fever to take away the pain . She closed her eyes and nodded knowingly , mildly savoring the reaction her story has garnered .
Question: Why did the female subject die in the story highlighted ?
Options: 
A. The subject died of a lingering disease .
B. The subject died of an accident .
C. The subject died of old - age .
D. None of the above choices .


A