Which is an example of a credible promise?

In a new, high$-$quality television ad$,$ Mattress Connect promises to have the best deals in town.

Tony's Used Cars promises that all its cars are high quality and offers a two$-$year, $10,000$ mile warranty with every purchase.

A building contractor wins a bid for building a new subdivision by promising homes of exactly the same quality as those of other contractors, but at a much lower cost.

A video game publisher's marketing team promises fans that its next video game will have the best story and graphics ever created.