Burger King Received Much Attention for Its Whopper Sacrifice Campaign

Multiple Choice

Burger King received much attention for its Whopper Sacrifice campaign that asked,"What do you love more,your friend or the Whopper?" Facebook users were asked to "unfriend" 10 people from their Facebook friends list in exchange for a free burger.Burger King was using ________ to promote its products.

A) opt-out marketing
B) customerization
C) niche marketing
D) buzz marketing
E) viral marketing