this is a marketing question

Taco Bell just launched a new chicken taco nationwide and sales are slow. Burger King's sales for the chicken sandwich dropped dramatically after Popeye's launched their chicken sandwich. McDonald's sales for their chicken sandwich have leveled aft, since it's been available for many years. Popeyes saw a huge spike in sales for their new chicken sandwich What company is in the decline stage? Taco Be Popeye McDonald's Bure