What Is a Key Difference Between U

Multiple Choice

What is a key difference between U.S.law and that of most other countries regarding patents on publicly disclosed innovations?

A) Most nations other than the United States allow a one-year grace period after public disclosure.
B) The United States requires innovations to be publicly disclosed for one year before a patent is filed.
C) The United States allows a one-year grace period after a public disclosure.
D) U.S.patents only last for one year.