请选择此句正确的翻译：很抱歉，龙虾已经卖完了。
A: I am sorry that lobsters are sell.
B: I am sorry that lobsters are selling.
C: I am sorry that lobsters have been sold.
A: I am sorry that lobsters are sell.
B: I am sorry that lobsters are selling.
C: I am sorry that lobsters have been sold.
