Which combination is mismatched?
a)	Vitamin- D-Rickets	b)	Thiamine- Beri-beri	c)	Vitamin-K-Sterility	d)	Niacin-Pellagra

(c)

Deficiency of vitamin –D causes rickets in children and osteomalacia in adults, thiamine (Vitamin- ) deficiency causes beri-beri in human and polyneuritis in animals, vitamin-K (phylloquinone) deficiency causes bleeding disease or haemorrhages, reduced fertility or sterility is caused by vitamin-E ( tocopherol) deficiency and pellagra is due to niacin or nicotinamide deficiency.