Deficiency symptom of riboflavin is:
a) Cheilitis – inflammation of the lips or of a lip, with redness and the production of fissures radiating from the angles of the mouth
b) Cheilosis – a disorder of the lips characterized by fissures, especially in the corners of the mouth
c) Angular stomatitis, associated with a wrinkled or fissured epithelium that does not involve the mucosa
d) All of the above
D
D
D
D