Pieca Pizza is a 5 store chain of pizza restaurants. It purchased self service soda dispensers for all of its stores from Carbo Nation.  As part of the purchase contract, Carbo agreed to maintain and repair the soda dispensers for 3 years.  Six months later, the person who did the maintenance and repairs retired from Carbo.  Instead of hiring a new employee, Carbo entered a new contract with Bubbles, Inc. transferring its obligation to maintain and repair the dispensers to Bubbles.    After several dispensers were unusable for long periods, Pieca Pizza sued Carbo for breach of its contract to repair the dispensers.  Carbo denied any responsibility and said that it delegated the duty to Bubbles which now had the obligation to perform. 

   Who should win the law suit?  Explain why