Which of the Following Criteria Must Be Satisfied in Order

Which of the following criteria must be satisfied in order for a patent, other than a design patent, to be granted?

A) The object of the patent must be novel.
B) The object of the patent must be useful.
C) The object of the patent must be nonobvious.
D) The object of the patent must be novel but it does not have to be nonobvious.
E) The object of the patent must be novel, useful, and nonobvious.