Which of the Following Is True Regarding the Introduction Stage

Which of the following is true regarding the introduction stage of the product life cycle?

A) It is marked by a rapid growth in industry sales and also an increase in the number of competitors.
B) At this stage, firms attempt to reach new customers by studying their preferences and producing different product variations.
C) It usually starts with a single firm, and innovators form the main category of buyers.
D) It is characterized by intense competition for market share by firms, which leads to an increase in marketing costs.
E) It is marked by a growing number of product adopters and also an increase in the number
Of product versions available.