Which statement is true about supporting details in a text?

A.

The purpose of supporting details is to support the reader’s curiosity until the main idea is revealed.
B.

Supporting details in expository texts serve a different purpose than supporting details in narrative text.
C.

It may be necessary to read through a text more than once to identify the details that support or develop the main idea.
D.

Supporting details should be either facts or expert testimony, but not explanations or definitions.