61. Tendering: It is the bidder's public bidding for bidding competition without going through the general transaction negotiation procedure before buying or selling bulk commodities, contracting a construction project, or cooperating in a certain business. Finally, the bidder selects the transaction object to contract Way of trading. Which of the following transaction methods is a tender? ['The county government issues a notice to build a second-level highway, soliciting bids from units with a second-level qualification or higher.', 'U. S. rewards $ 5 million for live bin Laden.', "uatong Company's listed stocks are thrown at ten yuan price.", "Uncle Li's villa wants to be sold, it is priced at 900,000, and declares that it can be negotiated."]