A bluish discoloration of the skin and mucous membranes is termed（）， which is a sign that oxygen in the blood is dangerously diminished（as in carbon monoxide poisoning）.

A bluish discoloration of the skin and mucous membranes is termed（）， which is a sign that oxygen in the blood is dangerously diminished（as in carbon monoxide poisoning）.
A.cyanide
B.albinism
C.cyanosis
D.erythematosus
正确答案：cyanosis