(2) No patent right shall be granted to the following items:
First, scientific discovery;
Second, the rules and methods of intellectual activities;
Third, the diagnosis and treatment of diseases;
Fourth, animal and plant varieties;
Fifth, the substance obtained by atom and transformation.
The above-mentioned rules and methods of scientific discovery and intellectual activities do not belong to the invention mentioned in the patent law; Patents can be granted for the production methods of animal and plant varieties. No patent right shall be granted for inventions and creations that violate laws, social ethics or hinder public interests.
According to the above passage, A is definitely not granted and B is not sure, but it does not belong to the case of not granting patent right, and it can be granted by default. C can be granted a patent. D drinks such as ingredients can be applied for invention, or packaging can also be applied for appearance. E Amoxicillin was a patent before.