Read the following context and choose the best option to answer the question.
Context: I ' ve been awake for an hour and i ' ve already smoked 3 cigarettes . my computer is going to die soon , and by die i mean fucking die forever and it wo nt ever come back . i m scared .
Question: What is the reason I have smoked 3 cigarettes in an hour .
Options: 
A. I need the extra nicotine because of stress and I love cigarettes .
B. None of the above choices .
C. I have a contract that pays me when I smoke cigarettes .
D. I am afraid I 'll run out of cigarettes and want to use them quickly .


A