28-A.FixedUsing account analysis, what type of cost is the rental of a space at $2,000 per month?

B.Mixed

C.Step

D.Variable

29-A.conversion costs.Manufacturers consider selling and administrative costs to be

B.prime costs.

C.period costs.

D.inventoriable costs.

30-Ecommerce refers to the:

A.production of superior goods and services.

B.exchange of information with customers and suppliers.

C.conduct of business on the internet.

D.quick delivery of goods and services.

31-Which of the following cost behaviours cannot be accurately represented by a single straight line?

A.Variable costs

B.Fixed costs

C.Mixed costs

D.Step costs

-Just the correct answers (Letters), without any explanation at all, many thanks -Please just answer if you're sure about the answers