<prompt> Which of these has the max natural source of vitamin A?CarrotHalibut liver oilCod fish oilCow milk  <response>: Halibut Liver Oil has the maximum natural content of Vitamin A also it has the richest source of the Vitamin D. Among fruits Ripe Mango among vegetables carrot have high content of Vitamin A. Vitamin A deficiency causes Xerophthalmia. 