Using the ABCD Rule for Diagnosing a Melanoma Associated with the Skin

Multiple Choice

Using the ABCD rule for diagnosing a melanoma associated with the skin, the "D" refers to

A) darkness of the spot or region of the skin, usually varying in intensity of the color black.
B) degree of irregularity of the spot from a circle.
C) diameter of the spot.
D) density or thickness of the melanoma.
E) "damage," or the extent that the skin cells have lost normal function.