The answer is C. hue, chroma, value.
You would probably also choose supplemental colors and characterization to give the tooth a natural appearance.
It is very important to remember what each of these terms describe:
Hue = the variety of a color, shade, or tint. The hue of an object can be red, green, yellow, and so on and is determined by the wavelength of light reflected and/or light observed. In the Vita Lumin shade guide, A1, A2, A3, A4 are said to be similar hue as are the B,C, and D shades. The region with the highest chroma (i.e., the cervical region of the canines) should be used for the initial hue selection
Chroma = the intensity of a hue. The terms saturation and Chroma are sometimes use interchangeably. Imagine a bucket of water to which 1 pint of latex paint is added. The saturation or Chroma is low. Adding a second pint of paint increases the Chroma, and so on, until the solution is almost all paint and a High chrome results.
Value = the relative lightness or darkness of a color or the brightness of an object. The brightness of any object is a direct consequence of the amount of light energy that the object reflects or transmits. The value for a given tooth can be determined WITH A SECOND COMMERCIAL SHADE GUIDE whose samples are arranged in order of increasing lightness.
Contemporary Fixed Prosthodontics, Rosenstiel, et al. pp 489-494
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