Hayden Owes Luther $5000

Hayden owes Luther $5000.Hayden will only be able to pay this debt if he is able to sell his one-year-old Harley motorcycle,valued at $20,000.Hayden writes a check to Luther that reads,"Payable to the order of Luther the sum of $5000 as soon as my Harley motorcycle sells for a reasonable amount." This check is

A) negotiable, assuming Luther accepts delivery of the check.
B) negotiable if Hayden also includes a date that he expects the motorcycle to sell.
C) non-negotiable because it does not state a definite amount of money.
D) non-negotiable because the check is conditional.