BT Brews, a beer manufacturer, follows a cost leadership strategy. Over the past $20$ years, the company has become a cost leader in the industry. However, the firm's business analytics team observed that n the past few months, the company has seen a gradual decline in its sales. Which of the following is most likely to be the reason behind the decline in sales?

$$ BT Brews has created economies of scale, which has negatively impacted the company's performance.

$$ BT Brews's relative lack of market research because of its cost leadership strategy has led the company to be less skilled than other companies at detecting important environmental trends.

$$ BT Brews has created a barrier to entry to protect itself from existing as well as new competitions, and this lack of competition has led to the gradual decline of the company's sales

$$ BT Brews has not been able to offer its customers products of acceptable quality at a low price.

$$ BT Brews's rapid growth as a cost leader no longer allows it to demand price concessions from its suppliers, and this, in turn, has led to poor sales.