The correct option is A A-1, B-2, C-3, D-4
Vitamins are important nutrient supplements required in small amounts. They usually serve as coenzymes in metabolic reactions. Vitamin B1 is also called as Thiamine and its coenzyme form is thiamine pyrophosphate. Vitamin B5 is pantothenate. It is an important component of coenzyme A. Vitamin B3 or Niacin is important for synthesis of nicotinamide adenine dinucleotide or NAD and nicotinamide adenine dinucleotide phosphate or NADP. Vitamin A is also called retinol. It is essential for vision. Vitamin E is also called tocopherol. It is an important for fertility factor.