Read the following context and choose the best option to answer the question.
Context: I just got back from buying some groceries . The man in front of me had gray hair . His fingers were all bent and it took a long time for him to write his check . He looked to be about 80 years old .
Question: What may be a valid thing the gray - haired man was doing ?
Options: 
A. He may be getting his social security check .
B. He may be getting a haircut at the saloon .
C. None of the above choices .
D. He may be interacting with a cashier .


D