Which of the Following Is True with Regard to Industrial

Which of the following is true with regard to industrial design?

A) Properly marking a protected item may limit an owner's remedies for infringement.
B) To be protected,an industrial design must be registered within five years of being published.
C) The design of a manufactured article such as a sofa is protected by copyright.
D) Industrial design protection lasts for the life of the inventor plus 50 years.
E) A person who creates a unique shape of a manufactured article (with no useful function) can protect his or her design by registering it under the Industrial Design Act,a federal statute.