The USPatent and Trademark Office Issues a Patent Upon an Application

The U.S.Patent and Trademark Office issues a patent upon an application containing:

A) a specification,which describes the features that make the invention patentable.
B) claims,which describe the features that make the invention patentable.
C) claims,which describe how the invention works.
D) a summary of the prior similar inventions and an explanation of how this invention is distinct from them.