Mitchell Coach Manufacturing Company, Inc., produces motor homes and sells them to other retail dealers and directly to customers. Ronny Stephens was a customer. WW, Inc., bought and sold motor homes from Mitchell. Under their agreement, WW would pay Mitchell either a down payment on a motor home before the motor home was purchased or the entire amount due for the completed product. Also under the agreement, the title of the motor home remained with WW until Stephens paid in full. WW paid Mitchell a down payment of $10,000 for the construction of the motor home. Upon completion, the motor home was to be picked up by Stephens at Mitchell. WW paid the remaining balance to Mitchell, but the check was returned for lack of sufficient funds. Stephens, through a loan, had paid for the motor home in full, but WW had not paid Mitchell. Both Mitchell and Stephens claim title to the motor home. Who does title belong to?