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 2+ in urine. Which of the statements given above are right?