When MillerCoors Used a Taste Challenge Promotion to Help Regain

When MillerCoors used a Taste Challenge promotion to help regain market share for Miller Light against Bud Light and other brands of light beer, it was

A) using a sales promotion to attract users of a competing brand.
B) identifying new uses for the brand.
C) obtaining repurchase.
D) defending current customers.
E) targeting a specific market segment.