Silvan invents a novel, useful, nonobvious product. Which of the following statements is true? Group of answer choices Silvan must apply for a patent within one year of selling the product commercially. Silvan is entitled to a patent over someone else who invents the same product if he is the first to invent it. Silvan may receive patent protection for two years by filing a simpler, shorter, cheaper provisional patent application while he is working on his complex, regular patent application. Silvan may sell his product for up to five years to see how well it sells before going through the complex process of filing a patent application with the Patent and Trademark Office