Consider statements about vitamins: 1. Vitamin A deficiency causes night blindness. 2. Vitamin B1 deficiency causes beriberi. 3. Vitamin C deficiency causes rickets. Which are correct? MCQ with Answer and Explanation

Vitamin A is essential for the synthesis of rhodopsin, a visual pigment; its deficiency leads to night blindness, the inability to see in low light. Vitamin B1 (thiamine) is crucial for carbohydrate metabolism; its deficiency causes beriberi, characterized by nerve and heart dysfunction. Vitamin C deficiency causes scurvy, characterized by bleeding gums and poor wound healing; rickets is caused by a deficiency of Vitamin D, leading to soft, weak bones in children. Thus, statements 1 and 2 are correct.