Read the following context and choose the best option to answer the question.
Context: I look in your eyes and i think about the last year and how much fun i had and how happy we were and it tears me apart . None of this is your fault . It 's mine .
Question: What might be the reason I feel guilty ?
Options: 
A. I made you unhappy last year .
B. I did n't have fun then .
C. I messed up last year .
D. I am at fault .


D