4. Zeke pulls out a knife and tells Bob to write him a check for $500. Bob does so. Zeke takes the check to his bank, properly endorses it, and receives $500 in cash. Bob stops payment on the check. Which of the following statements is true? A. Bob need not pay the check because it was obtained illegally. B. Bob must pay the check because Zeke was a holder in due course. C. Bob need not pay the check because the bank is a holder, not a holder in due course. D. Bob must pay the check because the bank is a holder in due course