Which sentences in the passage are true regarding the expenses involved in various stages of distribution? 1. (Storing and maintaining goods in a warehouse is a major cost in the distribution channel.)

2. (Normally, retailers bear the cost of warehousing. Selling expenses include the cost of transportation equipment, such as ships, trucks, and trains.)

3. (Often, the retailer and manufacturer contribute to the expenses of store displays together, including end-of-the-aisle promotion.)