Stealth Inc Designs and Manufactures a Variety of Products

Stealth Inc designs and manufactures a variety of products. Some of those products are marketed to ordinary consumers, while others are marketed toward governments. Stealth Inc is also aware, however, that its products often end up in the hands of criminals and terrorists. Which of the following statements is TRUE?

A) because of the requirement of "usefulness," a patent will not be granted unless an invention is generally beneficial to the public
B) A patent will not be granted for a new invention unless Stealth Inc can first show that there is a market demand for such a product.
C) Patent protection is available for entirely new inventions, but not for mere improvements to pre- existing products.
D) An invention may be granted patent protection even though it is manufactured with an illicit purpose in mind.
E) none of the above