U1. In each of the following examples, do bidders have private values or not? Why or why not? In each case, imagine that the object in question is being auctioned to a group of Wall Street investors. (a) Shares of stock in Mystery Enterprises Agricultural Technologies (MEAT), a (fictional) biotech startup that sells "Mystery Meat" under the tagline "There's no mysteryit tastes like beef!!" (b) A lifetime supply of Mystery Meat. (c) A hamburger (made from traditional beef).