Which statement best expresses the connection between the supporting details and the key ideas in a memoir?

Question

Mercury · Answer

answer choices (please post these next time)

A.Each key idea has only one supporting detail that it is connected to. . 
B. Supporting details and key ideas are synonyms in the memoir genre..
C. A list of supporting details and key ideas is included within each memoir. 
D. The key ideas are summative words or phrases supported by the details.

Mercury · Answer

you can eliminate A (a key idea can have more than one supporting detail related to it) and B (key ideas and supporting details are not the same thing)

between C+D, what are your thoughts?