This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Which of the following deficiencies are associated with the disorders of hyperplasia of salivary gland and keratinisation of the salivary gland 
Select and explain. 
A. Vit -A, B. Vit -B, C. Vit -C, D. Vit - K
A: Vit -A
Answer: A: Vit -A 
Explanation: None