A large wholesale dealer in produce had never done business with a certain greengrocer who operated a small chain of markets in the Midwest. They entered into a written agreement whereby the wholesale dealer agreed to supply to the greengrocer the "fuzzy" variety of peaches at $35 per 50-pound lot. The agreement contained a provision stating that the greengrocer will buy "as many 50-pound lots of fuzzy peaches as the greengrocer chooses to order." Assuming that the greengrocer has not yet placed any orders for peaches with the wholesale dealer, is this agreement between the parties enforceable?