Physiology All are true about Vitamin D except: A 25-hydroxylation occurs in the liver B 1-(x hydroxylation occurs in the kidneys C In the absence of sunlight, the minimum daily requirement is 400-600 IU D William's syndrome consists of mental retardation, obesity and precocious pubey 💡 Explanation All are true about Vitamin D except: ✓ Correct Answer: D. William's syndrome consists of mental retardation, obesity and precocious pubey