Pick up the correct statement from the following :

• If the slope of the curve of a mass diagram in the direction of increasing abscissa is downward, it indicates an embankment
• The vertical distance between a maximum ordinate and the next forward maximum ordinate represents the whole volume of the embankment
• The vertical distance between a minimum ordinate and the next forward maximum ordinate represents the whole volume of a cutting
• The area enclosed by a loop of the curve and balancing line, measures the haul in that direction.
• all the above.