Manufacturers may sell goods directly to consumers where goods are i. made to customer's specification ii. advertised by the manufacturer iii. perishable iv...

Manufacturers may sell goods directly to consumers when the goods are perishable, made to customer's specification, highly technical, or widely demanded. When goods are perishable, it is necessary to sell them directly to the consumer in order to reduce the risk of spoilage. When goods are made to customer's specification or highly technical, it may be necessary to sell them directly to the consumer in order to ensure that the customer's needs are met. Finally, when goods are widely demanded, it may be more profitable for the manufacturer to sell them directly to the consumer rather than through intermediaries such as wholesalers and retailers. Therefore, the correct option is (i), (iii), and (iv) only.