Consider the following statements: 1. Non-functioning of lachrymal gland is an important symptom of deficiency of Vitamin A. 2. Deficiency of Vitamin B1 can lead to indigestion and heart enlargement. 3. Vitamin C deficiency can lead to pain in the muscles. 4. Deficiency of Vitamin D causes increased loss of Ca++ in urine. Which of the statements given above are correct?

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Correct answer: 1, 2, 3 and 4. Statement 1 is correct: Vitamin A is essential for maintaining healthy tear production and eye lubrication. Its deficiency can cause xerophthalmia, leading to dryness in the conjunctiva and cornea due to impaired lacrimal gland function. If left untreated, it can result in severe eye damage and vision impairment. Statement 2 is correct: Vitamin B1 (thiamine) plays a crucial role in energy metabolism and nerve function. Its deficiency leads to beriberi, which occurs in two forms: Wet beriberi affects the cardiovascular system, potentially causing heart enlargement, rapid heartbeat, and heart failure. Dry beriberi impacts the nervous system, leading to muscle weakness, nerve damage, and digestive issues such as indigestion. Statement 3 is correct: A lack of Vitamin C results in scurvy, characterized by muscle pain, joint discomfort, and fatigue. Since Vitamin C is essential for collagen synthesis and its deficiency weakens connective tissues, leading to pain, fragile blood vessels, and slow wound healing. Statement 4 is correct: Vitamin D is vital for cal

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