Here is a single or multi-choice question: What poet wrote : `` ... I have promises to keep , and miles to go before I sleep '' ?

Would the answer to this question be an entity, an abbreviation, a description, a human, a location, or a numeric value?

Pick from:
A). description;
B). entity;
C). abbreviation;
D). human;
E). numeric;
F). location;
D).