What price would the natural monopolist charge if it were unregulated?

The natural monopolist would set quantity where MR = MC and then charge a price that consumers are willing to pay for that quantity based on the demand curve.

The natural monopolist would set quantity and price where AC intersects the demand curve because that is what consumers are willing to pay.

The natural monopolist would set quantity where MR intersects demand and then charge a price that consumers are willing to pay for that quantity based on the demand curve.

The natural monopolist would set quantity and price where MC intersects the demand curve because that is what consumers are willing to pay.