Which sentence best describes the difference between hyperpigmentation and hypopigmentation?
Select the correct response:
a. Hyperpigmentation is an overproduction of pigment, whereas hypopigmentation is a lack of pigment.
b. Hyperpigmentation causes albinism, whereas hypopigmentation causes freckles.
c. Hyperpigmentation is a lack of pigment, whereas hypopigmentation is an overproduction of pigment.
d. Hyperpigmentation causes vitiligo, whereas hypopigmentation causes melasma.