though mAnAgErs oF CommErCiAl shEllFish BEDs in mAny CountriEs monitor thE prEsEnCE oF pollutAnts using miCE, this mEthoD is EthiCAlly______AnD too ExpEnsivE For mAny DEvEloping CountriEs, smAll opErAtions or AmAtEur FishErmEn.
A．luCiD
B．inChoAtE
C．pEssimistiC
D．prEEmptivE
E．(E) ContEntious