In Pellagra, there is loss of appetite, vomiting, weakness, irritability and aggression, abdominal pain. One suffering from pellagra also has diarrhoea, and curving of the extremities of limbs.
Marasmus is deficiency of energy intake in all forms while kwashiorkor is deficiency in proteins. Xerophthalmia is a condition where the eye fails to produce tears.
Therefore, the correct answer is option B.