What would happen to potential GDP if a country increased the number of foreign workers inside its borders? O potential GDP would stay the same O potential GDP would rise O potential GDP would fall26. The coupon for a free six-inch sub sandwich with the purchase of a six-inch sub of equal or greater value and a thirty-ovo-ounce fountain drink is an example of a a. trade promotion 13. promotional product e. Specialty pack d. premium e. consumer promotion