Which of the statements about a many-to-many transportation problem are true? Select all correct answers A hub-and-spoke network would imply additional touches of the product, which would increase the risk of product damage. The more stops a load makes throughout the delivery network, the higher the service level of that lane. Direct modes of transportation should never go to a hub for sorting. In many-to-many transportation problems, the only costs to be considered are fixed costs per shipment. A hub-and-spoke network would allow to make more frequent deliveries of smaller quantities to more locations compared to direct deliveries. None of the above