Which of the following statements is true about the America Invents Act $($AIA$)?$

A$.$It introduced remedies such as monetary damages and injunctions for patent infringement.

B$.$It changed the effective filing date for patents to the actual filing date of the patent rather than the date of invention.

C$.$ It did away with the expedited patent process that enabled the completion of a patent application process within $12$ months.

D$.$ It changed the patent system in the United States from a "first to file" system to a "first to invent" system.