HELP PLEASE! I’ll give Brainlist! Read the following argument.
Swiftmart Advertisement: You'll find the lowest prices at our store!Bring in a competitor's coupon and we will match their price on any item we sell. You won't be able to find a store with prices lower than ours. Ten thousand customers can't be wrong!

What is the primary fallacy in the store's argument?

1. It claims that its conclusion is true because people agree that it is, rather than demonstrating that it is true.

2. It claims that conclusion is true because people are unable to prove otherwise.

3. It claims that only one of two scenarios can possibly be true, leading to its conclusion

4. It claims that its conclusion is true because of evidence it provides within the argument itself