Milk has become a popular drink for modem Chinese, not only is its nutritional (营养的) value appreciated, it seems even to have taken the role making the whole nation strong. Milk industry has only about 180 years of history among the Hah people. For a long time, milk was considered a luxury (奢侈的 )drink by common people. A widespread saying in the country was that Japan used a cup of milk to strengthen the constitution (体格) of its people. That sounds reasonable because the rich "Ca" in milk definitely benefits the constitution.The average annual consumption per capita in Japan has risen from less than 10 kilograms immediately after World War II to 68 kilograms today. The average height of Japanese has increased by 11 centimeters during this period. The Chinese Government also hopes to improve the constitution of local people, and since milk is the most obvious nutritious food, it has naturally been picked up. But due to tradition, Chinese people are not in the habit of drinking milk regularly. The annual output of milk in the country is about 10 million tons, compared with an output of alcohol reaching 8 million tons. The annual milk consumption per capita is about 7 kilograms in China while the world’s average is about 100 kilograms. The government has noticed the huge gap and plans to raise consumption to 10 kilograms per capita by 2005 and 16 kilograms by 2010. The government has also started plans for "school milk" since the beginning of this century. For decades, milk was considered a luxury drink because common people （）.

A. did not like drinking milk
B. could find no way to get milk
C. were not used to drinking milk
D. could not afford drinking milk