in thE pAssAgE, thE Author is primArily ConCErnED with
A．prEsEnting A hypothEsis AnD DEsCriBing CompElling EviDEnCE in support oF it
B．rAising A quEstion AnD DEsCriBing An importAnt DisCovEry thAt lED to An AnswEr
C．showing thAt A CErtAin AutoimmunE DisEAsE CAnnot yEt BE trEAtED EFFECtivEly with Drugs
D．ExplAining whAt EviDEnCE Exists For An AutoimmunE CAusE For nArColEpsy
E．(E) DisCussing thE importAnCE oF rEsEArCh on AnimAls For thE stuDy oF humAn DisEAsE