<prompt> Vitamin A should be staed at the age of :-2 months9 months5-6 yearsNone of the above  <response>: - Accordong to NIS Vit A should be staed at the age of 9 months from then, should be given for every 6 months till 5yrs of age. - Hence, totally 9 doses of Vit A is given; i.e 17 lakh IU. 