Willingham proposed to obtain an investment property for the tschiras at a "fair market price," lease it back from them, and pay the tschiras a guaranteed return through a management contract. using a shell corporation, the wellingham group bought a commercial property in nashville for $774,000 on december 14, and the very same day sold the building to the tschiras for $1,985,000. the title insurance policy purchased for the tschiras property by willingham was for just $774,000. willingham believes that the deal was legitimate in that they "guaranteed" a return on the investment. the tschiras disagree. in a lawsuit against willingham, what theory will the tschiras rely on? decide.