Explanation/Reference:
Exposure is used to correct exposure problems in your image; you can use the Exposure option. Change the Exposure, Offset, and Gamma Correction to give your file highlights or dark tones similar to overexposing or underexposing a picture.
Answer option C is incorrect. You can add up to 14 points along the tonal range in the Curves option, from shadows to highlights.
Answer option B is incorrect. The levels of the brightness values in your file can be adjusted by adding a Levels layer to it. You see a histogram, when you choose the Levels option that represents the brightness values found in your file. By adjusting the sliders, you can decrease or increase the darkness of your darkest pixels or decrease or increase the brightness of your brightest pixels. You can do this in all the color channels together or in each one individually.
Answer option A is incorrect. You can adjust the brightness of the image by the first slider and the contrast of the image can be adjusted by the second slider.
Reference: Adobe Photoshop Bible , Contents: "Lighting and Color Adjustments"