A. Three percent of beer volume is alcohol, compared with wine's twelve percent and whiskey, cognac, and rum's forty percent

B. Three percent of beer volume is alcohol, of wine it is twelve percent, and of whiskey, cognac, and rum it is forty percent

C. By volume, beer is three percent alcohol, compared with wine, which is twelve percent alcohol; whiskey, rum and cognac are each forty percent alcohol

D. The percentage of beer volume that is alcohol is three, compared with wine's twelve, whiskey's forty, cognac's forty, and rum's forty. C

E. The percentage of beer volume that is alcohol is three; that of wine is twelve, and that of whiskey, cognac, and rum is forty.

C

A为什么不对？beer is three percent alcohol感觉怪怪的，应该是beer含有酒精，用is 连接，就是感觉怪。

是不是答案给错了？