Which of the following statements is/are not true?

P. The lack of panthothenic acid in diet causes nausea and vomiting. Q. Dermatitis of fingers and neck is caused by the deficiency of vitamin B₃. R. Behavioural abnormalities in children is caused by the deficiency of ascorbic acid.

The lack of panthothenic acid in diet causes nausea, vomiting and tremor of the outstretched hands. Dermatitis of fingers and neck is caused by the deficiency of vitamin B₃ or niacin. Behavioural abnormalities occur in riboflavin deficient children. The deficiency of ascorbic acid or vitamin C causes scurvy, pain in bones and bleeding gums. Hence, statement R is not true.