Consider statements about vitamins: 1. Vitamin A is essential for vision. 2. Vitamin B complex helps in energy metabolism. 3. Vitamin C is essential for blood clotting. Which are correct? MCQ with Answer and Explanation

Vitamin A (retinol) is crucial for maintaining healthy vision, particularly in dim light, as it is a component of the visual pigment rhodopsin. The B-complex vitamins (like B1, B2, B3, B5) act as coenzymes and are essential for various metabolic pathways, particularly the conversion of carbohydrates, fats, and proteins into usable energy. Vitamin K, not Vitamin C, is essential for the synthesis of blood clotting factors; Vitamin C is essential for collagen synthesis and immunity. Thus, statements 1 and 2 are correct.