1. Sabrina owes $600 to Yale, who asks Sabrina to sign an instrument for the debt. If written on the instrument by Sabrina, which of the following would prevent its negotiability: I.O.U. $600, I promise to pay $600, or an instruction to the bank stating, I wish you would pay $600 to Yale? Why? 2. Muriel Evans writes the following on the back of an envelope: I, Muriel Evans, promise to pay Karen Marvin or bearer $100 on demand. Is this a negotiable instrument? Discuss fully. 3. Lyn writes a check for $900 to Mac, who indorses the check in blank and transfers it to Jan. She then presents the check to Omega Bank, the drawee bank, for payment. Omega does not honor the check. Is Lyn liable to Jan? Could Lyn be subject to criminal prosecution? Why or why not?.