Question

Which sentence uses dashes correctly?

A.
They use the same—decorations every year—I'm hoping they make new ones this time.

B.
My aunt's quilt was the most colorful one—red and purple—in the fair's quilting exhibit.

C.
A complex assignment—that is, one that requires research—usually takes a few days to complete.

D.
Everyone enjoyed the show—and gave a standing ovation—to the players.