og12，87题求教. 最后的代词they指代什么？

瓢自漂耳

87.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
答案选：C。但我不知道答案中最后的they指代什么，这句话到底想表达什么意思？？？
求高人指点！！！

kylinhtq

Italian vintners
他们的酒将降价出售，而他们也这么做了