While Studying the Skin in a Science Class, a Student

Multiple Choice

While studying the skin in a science class, a student asks why all people have a pinkish color to their lips/mucous membranes. The instructor would respond by citing which of the following responses?

A) Melanocytes are the pigment-synthesizing cells.
B) Pheomelanin is the yellow to red pigment particularly concentrated in the lips and nipples of humans.
C) Tyrosinase is responsible for all-colored cell production.
D) A person with tiny melanocytes will have more concentrated pigment resulting in darker color.