ChoosE thE CorrECt lEttEr FromA- D、AnD writE it in BoxEs on yourAnswEr shEEt. thE ECo-tourism mArkEt A、is morE likEly to impACt on nAturAl hABitAts. B、is likEly to rEstriCt mArkEting oF unEthiCAl tour opErAtors. C、is morE likEly to rEpAtriAtE proFits From loCAl CommunitiEs. D、is likEly to BE morE sustAinABlE thAn mAss tourism.