Answer:
It will affect Wendy's fast- food sales negatively.
Explanation:
Especially if the competitors have larger market share than Wendy's Fast-food. There will be a switch in consumers from Wendy's Fast-food to it's competitor, therefore reducing its sales and invariably reducing it's profit.
Therefore, Wendy's fast-food should be in tune with price fluctuation of it's competitors especially if it is a price decrease.