Choose the term described by the sentence: A special right to an inventor to be the only person to make and sell, or to authorize others to make and sell a newly－invented machine or process( ).

Choose the term described by the sentence: A special right to an inventor to be the only person to make and sell, or to authorize others to make and sell a newly－invented machine or process（).

A.return

B.patent

C.budget

D.portfolio