Read the following context and choose the best option to answer the question.
Context: I was at the local Mega - Shop - And - Save last week when I realized I 'd been asked to whitewash the fence ... metaphorically speaking . Actually I was at the cheerfully - named ( but badly spelled ) " U Check " stand scanning and bagging my own purchases . If I wanted lighthearted small talk while I checked out , I 'd have to supply that myself as well .
Question: What may have been the reason for the poster 's sarcasm ?
Options: 
A. The poster was written up for doing a poor job of cashiering .
B. The poster did n't think it was fair to have to whitewash the fence .
C. None of the above choices .
D. She went into a store and was expected to be her own cashier .


D