Answer: A, B, C, D

The answer is ABCD. Marks that are prohibited from being used as commodities include: those that are the same as or similar to the country name, national flag, national emblem, military flag, and medals of the People's Republic of China, as well as those that are the same as the signs and names of "Red Cross" and "Red Crescent" or similar; ethnically discriminatory; exaggerated propaganda and deceptive. Marks that lack distinctive features may be used but are prohibited from being registered as trademarks.