Read these passages: Preface :

This distinction prevailed until August 2006, when the
International Astronomical Union (IAU), prompted by
pressure from the professional community of planetary
scientists as well as from the general public, brought
Pluto's planethood to a vote at a triennial general assembly

in Prague, Czech Republic. The result? Pluto was formally
downgraded from "planet" to "dwarf planet," thereby
helping to diffuse the negative attention that we had been
receiving for six years running.
- Neil deGrasse Tyson, The Pluto Files

Interview:
Over the years, people started realizing that maybe that
kind of makes sense, and six years later, the International
Astronomical Union, they took a vote, and basically they
said Pluto should be reclassified. So we were, in the end,
kind of vindicated.

- Neil deGrasse Tyson, interview by Melissa Block,
'Astrophysicist Chronicles Battle over Pluto
What is one difference between the interview, "Astrophysicist Chronicles
Battle over Pluto, and the preface from The Pluto Files?

A. The interview contains run-on sentences and 'filler" words while
the preface uses complete sentences.
B. The interview expresses a complete idea while the preface just

gives an overall impression of the topic.
C. The preface shows the author's emotion while the interview shows
the author's attitude in an unemotional way.
)D. The interview is clearly structured while the preface is not well-
organized and hard for the audience to follow.