A $5,000 promissory note payable to the order of Neptune is discounted to Bane by blank endorsement for $4,000. King steals the note from Bane and sells it to Ott, who promises to pay King $4,500. After paying King $3,000, Ott learns that King stole the note. Ott makes no further payment to King. Ott is:
A. A holder in due course to the extent of $3,333.
B. A holder in due course to the extent of $5,000.
C. An ordinary holder to the extent of $0.
D. An ordinary holder to the extent of $4,500.