Read the following context and choose the best option to answer the question.
Context: I start looking for the screaming woman and finally figure out it 's coming from an apartment at the end . All the other neighbors are hiding behind their doors and the woman screaming is in the upstairs apartment . I go up there and knock . I yelled if everything was okay , if she needed the police .
Question: Why did the narrator knock at the door ?
Options: 
A. None of the above choices .
B. To see if the apartment was clean .
C. To see if the woman was home .
D. To see if the woman was alright .


D