Which sentence contains an error in the use of dashes?
A. The puppy—poor little thing—whimpered most of the night.
B. If you get lost—heaven forbid!—please call me, and I'll give you directions.
C. Trees rustling, crickets chirping, and thunder in the distance—everything scared me.
D. We couldn't believe that the actress—the one in that movie, was Becky's aunt.