The cost of visiting customers would MOST likely be classified as a

a. Distribution-channel cost

b. Corporate-sustaining cost

c. Customer-sustaining cost

d.Customer output unit-level cost

e. Customer batch-level cost

When a single manufacturing process yields two products, one of which has a relatively high sales value compared to the other, the two products are respectively known as

a. Byproducts and scrap

b. Joint products and scrap

c.Main products and joint products

d. Joint products and byproducts

e. Main products and byproducts