The Chapter-Opening Story About the Inhabitants of the Same New

The chapter-opening story about the inhabitants of the same New York apartment who lived a century apart shows us that

A) change is always positive.
B) New Yorkers face exactly the same problems as they did a century ago.
C) in some ways, life has clearly improved, and in some ways it has not.
D) over the last century, there has been surprisingly little change. (Applied;