A.0 B.100萬(wàn)元 C.120萬(wàn)元
A.30 B.40 C.50
A.經(jīng)濟(jì)利潤(rùn)大于零 B.經(jīng)濟(jì)利潤(rùn)小于零 C.經(jīng)濟(jì)利潤(rùn)等于零