The correct answer is D. All of the above.
Patentability criteria are the requirements that an invention must meet in order to be granted a patent. The three main criteria are novelty, inventive step, and capable of industrial application.
Novelty means that the invention must be new. It must not have been previously known or used by others in the world.
Inventive step means that the invention must be inventive. It must not be obvious to a person skilled in the art.
Capable of industrial application means that the invention must be capable of being made or used in some kind of industry.
If an invention meets all three of these criteria, it is said to be patentable.