When Exposed to the Cold, the Ears and Nose May

When exposed to the cold, the ears and nose may appear red. This is because

A) blood vessels in the nose and ears have constricted to conserve heat.
B) cyanosis occurs when blood flow slows down.
C) the nose and ears have a thicker, more keratinized stratum corneum than the rest of the face.
D) cold causes an inflammatory reaction in the nose and ears.
E) blood vessels dilate to prevent tissue damage from the cold.