ACCorDing to thE pAssAgE, whiCh oF thE Following stAtEmEnts is truE
A．Folk hEAlErs ChoosE DiFFErEnt hErBs to CurE DisEAsEs without Any sounD BAsis.
B．pEoplE who prACtiCE Folk mEDiCinE nEED lots oF FormAl EDuCAtion on hErBs.
C．thE suCCEss oF Folk mEDiCinE lED to thE DEvElopmEnt oF DoCtor mEDiCinE.
D．nAturAl CurEs workED BEttEr thAn sCiEntiFiC mEDiCinE in AnCiEnt timEs.