Referring to the given figure, what should the display on the scope look like if the A/D converter is working properly?

• It should be a circular Lissajous pattern resulting from the simultaneous application of ramps to the vertical and horizontal inputs of the oscilloscope.
• The pattern should be a straight line across the screen due to the equal but opposite voltages being applied to the scope inputs.
• A uniform stairstep pattern should be displayed.
• The scope should display a sequential binary count with the LSB on the left and the MSB on the right side of the display.