ACCorDing to thE pAssAgE, whiCh oF thE Following stAtEmEnts is trEE ABout Dr. roitEr
A．his wiFE hAs A FAtAl insomniA.
B．hE FounD slEEping pills wErE usElEss to insomniA pAtiEnts.
C．hE is thE DEsCEnDAnt oF A prominEnt itAliAn FAmily.
D．his wiFE's FAmily hAs suFFErED From FAtAl insomniA For CEnturiEs.