At the date fixed for receiving bids the legislative body of the municipal corporation shall open and examine all bids received and may sell the public utility to the highest and best bidder therefor. If the bids received, in the opinion of the legislative body are inadequate or disproportionate to the value of the public utility the legislative body may reject all bids and may proceed to give new notice of the sale of the public utility in the manner provided in Section 10057.