Answer:
Correct option is (d)
Explanation:
Utility patent is granted to protect an innovation from being copied by others. Utility patent is granted to protect the functionality or usage of the product while design patent is granted to protect the way the product looks like its appearance or ornamentation.
Utility patent is granted for 20 years from the date the application is file with the US trade office while design patent is granted for 14 years from the date of invention.
Here, McDonald's invention is granted utility patent that protects the product for 20 years from the date application is filed with the US patent office.