1.

Diseases caused by the deficiency of vitamin D(X) and vitamin B_(2)(Y) are

Answer»

`{:(X,Y),("SCURVY","CHEILOSIS"):}`
`{:(X,Y),("Rickets","Cheilosis"):}`
`{:(X,Y),("Rickets", "Scurvy"):}`
`{:(X,Y),("Scurvy","CONVULSIONS"):}`

Answer :B


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