A.總收益最小 B.總收益最大 C.總收益遞增 D.總收益遞減
A.Ed>1 B.Ed<1 C.Ed=1 D.Ed=0
A.MR=MC B.MR=SMC=LMC C.MR=SMC=LMC=SAC D.MR=SMC=LMC=SAC=LAC