Which of the following is a case of brand cannibalization? 
A. A tea manufacturer introduces a new brand of tea that eats into the sales of an existing brand of another manufacturer. 
B. A tea manufacturer introduces a new but inferior brand of tea to promote the sales of an existing tea brand in its product mix. 
C. A tea manufacturer introduces a new brand of tea that eats into the sales of an existing tea brand in its product mix. 
D. A tea manufacturer introduces a new brand of tea that has the unintended result of promoting the sales of an existing brand of another manufacturer.