The correct answer is:
1, 2, 3, and 4.
Statement 1 is correct: Non-function of lachrymal gland is an important symptom of deficiency of Vitamin A.
Statement 2 is correct: Deficiency of Vitamin B1 (Thiamine) can lead to various conditions including digestive issues and heart enlargement.
Statement 3 is correct: Vitamin C deficiency can lead to symptoms like muscle pain.
Statement 4 is correct: Deficiency of Vitamin D can lead to increased loss of calcium in urine.
Therefore, all four statements are correct.