The word functions as a coordinating conjunction in this sentence is B. But
Answer:
"Is it cheaper if I pump it myself"
The example of anecdote is:
As a young child, I remember loving the taste of popcorn when I went to the movie theater.
The anecdote is the oral stories which are of importance to the subject at hand. They add personal knowledge and experience to the subject. The above sentence tells about the story of popcorn that the speaker had. The story is a personal experience of the speaker. While the other sentences also contain some information about popcorn but they are facts and not personal experiences.
