Which statement most accurately describes Febrile seizure?

A. A bacterial respiratory infection causing paroxysmal cough and possible apnoea in infants. B. Proteinuria, hypoalbuminaemia and oedema, often steroid sensitive in children. C. Acute diarrhoeal illness with risk of dehydration, especially in infants and young children. D. A seizure associated with fever in a young child without central nervous system infection or another defined cause.