Last Week, Seward Company Stock Was Selling at $66 a Share

Last week, Seward Company stock was selling at $66 a share when Ryan sold 300 shares of the stock short.Today Ryan bought 300 shares of the same stock at a price of $70.00 share to cover his position.Ignoring trading costs, what is the dollar return on Sam's investment?

A) $1,200
B) -$400
C) $400
D) $-1,200