A.廠商無(wú)論如何做都會(huì)遭受虧損 B.廠商獲得了正常利潤(rùn) C.廠商應(yīng)該不進(jìn)入市場(chǎng),最優(yōu)產(chǎn)量為0 D.廠商的最優(yōu)產(chǎn)量為3 E.廠商的經(jīng)濟(jì)利潤(rùn)(即超額)為零