What Best Describes the Public Use Doctrine Relative to Patents

Multiple Choice

What best describes the public use doctrine relative to patents?

A) Patent protection is lost if the patented item becomes used by the public after the patent is granted.
B) Patents will not be granted for items that have been used by the public for more than 1 year before the patent application was filed.
C) Patent protection will be lost if a member of the public successfully discovers how to build the patented item through reverse engineering.
D) Once a patent is granted,it will be lost if the patented item is not made available to the public within 1 year after the patent is granted.
E) The public is allowed to engage in limited use of a patented invention without being held liable for damages.