<span>The plot structure that allows authors to 'come late' to their own story is in medias res. It is a Latin term which basically means 'into the middle of things.' Sometimes authors don't want to bother giving their characters a backstory, but rather begin the novel in the middle. An example would be Gaiman's 'American Gods,' because we don't see each of the gods' history in the beginning.</span>
Well one this excerpt revels how Sarah Penn looks like and but also it allows you to see that something had happened to Sarah when she looked at the old man which had gotten Sarah to look older.
I believe that would be B & C