Question $19(2$ points$)$

$$

Kellogg's begins to sell its cereals in new markets after conducting extensive marketing research. After the cereal begins to appear in these new markets, the company increases its $$aromotion expenditure to counteract competitive responses. Kellogg's is in the $q,$ stage of the product life cycle.

A$)$ growth

B$)$ adoption

C$)$ maturity

D$)$ introduction

E$)$ decline