GMAT Critical Reasoning (CR) | Re: Ice cream shop owner: Over the past six months, we have surveyed custo

Ice cream shop owner: Over the past six months, we have surveyed customers about the flavors they enjoy. The results show that our special Chocolate Fudge Chunk was chosen more than any other flavor. In response, we have created a new flavor called Fudge Overload. We believe anyone who enjoys Chocolate Fudge Chunk will enjoy this new flavor. If our belief is correct, then most of our surveyed customers are bound to enjoy Fudge Overload.

Which of the following indicates a flaw in the reasoning