Which One of the Following Sentences Uses Semicolons Incorrectly

Which one of the following sentences uses semicolons incorrectly?

A) I fell off the dirt bike four times today; nevertheless, I kept trying.
B) She didn't slow down; the yield sign was covered with brush.
C) Harley packed; extra towels, film, and some snacks.
D) The painting was very old; it sold for the most money at the auction.