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Option 1 is incorrect because pellagra and scurvy are not caused by a deficiency of Vitamin C and Vitamin D. Pellagra is a condition caused by a deficiency of niacin (Vitamin B-3), while scurvy is caused by a deficiency of Vitamin C.
Option 2 is correct. Pellagra is caused by a deficiency of niacin (Vitamin B-3) and scurvy is caused by a deficiency of Vitamin C. Vitamin B-12 deficiency can lead to other health issues, but it is not associated with pellagra or scurvy.
Option 3 is incorrect because pellagra is not caused by a deficiency of Vitamin C and Vitamin A. As mentioned earlier, pellagra is caused by a deficiency of niacin (Vitamin B-3).
Option 4 is incorrect because pellagra is not caused by a deficiency of Vitamin A and Vitamin B-12. Again, pellagra is caused by a deficiency of niacin (Vitamin B-3).