In an effort to reduce their inventories, Italian vintners have cut prices;their wines have been priced to sell, and they are. a.have been priced to sell, and they are b.are priced to sell, and they have c.are priced to sell, and they do d. are being priced to sell, and have e. had been priced to sell and they have
选C
问题1: they 和their 不指代一致么? they具体指人还是酒? 问题2: do 是sell的省略还是强调的助动词呢?