Consider statements about vitamins: 1. Vitamin A is essential for good vision. 2. Vitamin C prevents scurvy. 3. Vitamin D is essential for blood clotting. Which are correct? MCQ with Answer and Explanation

Vitamin A (retinol) is crucial for the maintenance of the cornea and the synthesis of rhodopsin, a pigment necessary for vision in dim light. Vitamin C (ascorbic acid) is essential for the synthesis of collagen; its deficiency leads to scurvy, characterized by bleeding gums and poor wound healing. Vitamin K, not Vitamin D, is essential for the synthesis of prothrombin and other clotting factors. Vitamin D is essential for calcium absorption and bone health. Thus, statements 1 and 2 are correct.