This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins, Subject name: Social & Preventive Medicine
How many doses of vitamin A are required to treat deficiency - 
Select and explain. 
A. 1, B. 2, C. 3, D. 4
C: 3
Answer: C: 3 
Explanation: Ans. is 'c' i.e., 3 o Treatment schedule as recommended bv WHOAgeDay 0 (immediately)Day / (next day)After 2 week to 4 week> 1 year (except women of reproductive age)2 lakh IU orallyor1 lakh IU inti2 lakh IU orallyor1 lakh IU imi2 lakh IU orallyor1 lakh IU imi< 1 year or any age but < 8 kg50.000 IU orally50,000 IU orally50,000 IU orallyo Treatment schedule applies to all stages of active xeropthalmiao Oral administration is the recommended method of treatmento Intramuscular injection schould be preferred in presence of repeated vomiting and severe diarrhea