Which of the Following Is an Advantage Offered by Cobranding

Which of the following is an advantage offered by cobranding?

A) Advertising,sales,promotion,and marketing must be carefully coordinated.
B) Retailers have exclusive products that cannot be purchased from competitors.
C) Manufacturers do not have to invest in creating their own brand names.
D) Brand equity is stabilized.
E) A company can expand its existing brand into a category it otherwise might have difficulty entering alone.