[讨论]OG 11-81

81. 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 they have

(E) had been priced to sell, and they have

答案是C，但是这句话我看不懂是什么意思，请大牛指点

如果我们说it sells就是说这个东西卖得不错

这里they do等同于they do sell，they指代的是wines

整句话就是说，他们的酒被降价出售，并且酒确实卖出去了