Interface,a Manufacturer of Floor-Covering Products,has Recently Entered into an Agreement

Interface,a manufacturer of floor-covering products,has recently entered into an agreement with Cargill,Inc.and Dow Chemical Co.to develop a carpeting manufactured from corn fibre,rather than the traditional nylon.Interface hopes to develop a biodegradable floor tile that will be sold to the public at prices only slightly higher than nylon carpet tiles.Interface's CEO has repeatedly said that the mission of his company is to look for manufacturing materials that are renewable and not petroleum dependent.
-Refer to Interface.Which of the following is the BEST example of a nonmarketing-controlled information source for floor tiling?

A) a discussion with coworkers about the best floor tiles to buy
B) a salesperson at a store that specializes in floor coverings
C) an ad in Better Homes & Gardens for floor tiles
D) a store display showing the various colours of tiles available