Studies Suggest That Leukoplakia Is Caused by Excess Vitamin a (A

Multiple Choice

Studies suggest that leukoplakia is caused by excess vitamin A (a fat-soluble vitamin) ,retinoids,and beta-carotene.Leukoplakia is an erythematous lesion that appears on the lateral borders of the tongue.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true; the second is false.
D) The first statement is false; the second is true.