At the time and place specified in the notice, the commission shall publicly open the sealed bids and shall award the lease for each parcel to the highest qualified bidder, unless in the opinion of the commission, the acceptance of the highest bid for any parcel or parcels is not for the best interests of the State, in which event the commission may reject all the bids for such parcel or parcels. Thereupon new bids may be called for and the parcel or parcels for which the bids were rejected may be leased as herein provided.