Which of the following statements best describes how a supply chain differs from a marketing channel?
1) Supply chains and marketing channels both deal mostly with the delivery of goods.
2) Marketing channels focus on the promotion and distribution of products, while supply chains involve the entire process from sourcing raw materials to delivering the final product.
3) Supply chains are only concerned with physical goods, while marketing channels can also include services.
4) Supply chains are linear and sequential, while marketing channels can be more complex and involve multiple intermediaries.