(CASE ANALYSIS) Gail Sak wanted to give her niece, Kim Ryan, a gift of money for her twenty-first birthday, which was two weeks away. Because she was leaving for a trip to Europe the next day. Sak gave Ryan a check dated that day reading. Pay to the order of Kim Ryan when she reaches the age of twenty-one (signed) Gail Sak. Was the check negotiable? Why or why not?