20. Under the R.O.C. Patent Act, the protection of design patents was expanded to cover certain digital image designs. Which of the following statements is most accurate? (A) Design patents protect only designs embodied in physical articles. (B) Digital image designs cannot be enforced against online infringement. (C) Design patents may protect qualifying digital image designs even when not permanently embodied in a physical product. (D) Digital image designs are subject to a shorter patent term than other design patents.