All of the Following Are True About Product Line Extensions

All of the following are true about product line extensions EXCEPT:

A) this strategy can result in lower advertising and promotion costs.
B) a risk that comes with product line extensions is that sales of an extension may come at the expense of other items in the company's product line.
C) a product line extension raises the level of brand awareness.
D) line extensions work best when they do not cause cannibalization.
E) product line extensions involve using a current brand name to enter a different product class.