In the following sentence, which group of words is a dependent clause?

A quick survey of the interior--the dirty shades, the rickety chairs, the
threadbare rugs-revealed a sorry truth about Marc's rise in the big city,
a truth that he had too long concealed from the folks back home: "living the life," at his salary, meant dinner out once a week, not much more.

A. A quick survey of the interior revealed a sorry truth

B. the dirty shades, the rickety chairs, the threadbare rugs

C. that he had too long concealed from the folks back home

D.at his salary, meant dinner out once a week not much more