burgerme came out with a new hamburger and, before including iton its main menu, released it in two different cities with two different prices. The marketets at burgeme then analyzed the imdifferent levels of purchase made at these two different places, planning to use Une marketers at burgerve then analyzed the information to help them set a nationwide price for the new offering. This is an example of $\_\_$

$$ ethnographic research

$$ secondary research

$$ experimental research