Arianna just made another fantastic investment: She purchased 400 shares in Great Gains Corporation for $21. 50 per share. Yesterday the stock closed at $56. 50 per share. In order to lock in her gains she has decided to employ a stoploss order. Assuming she set the order at $56 what is likely to happen? Why might this not be a wise decision? At what price would you recommend setting the stop-loss order? Why?