ACCorDing to thE pAssAgE, "inFrAlimBiC nEurons … FirE to thE tonE only whEn rAts ArE rECAlling ExtinCtion on thE Following DAy" (linEs 7-9) For whiCh oF thE Following rEAsons A.ExtinCtion hAs not BEEn provEn to ErAsE thE mEmory oF FEAr ConDitioning in rAts. B.thE ExtinCtion rEsponsE rEquirEs A numBEr oF DAys to DEvElop. C.thE suBjECt's originAl FEAr rEsponsE wAs not ConDitionED to A tonE. D.thE inFrAlimBiC CortiCEs CArry thE mEmory oF FEAr ExtinCtion. E.(E) rAts thAt show thE lEAst FEAr DEmonstrAtE thE grEAtEst inCrEAsE in inFrAlimBiC tonE rEsponsEs.