What are two features of the Android operating system? (Choose two.)

What are two features of the Android operating system? (Choose two.)

• Android is open source and allows anyone to contribute to its development and evolution.
• Android has been implemented on devices such as cameras, smart TVs, and e-book readers.
• All available Android applications have been tested and approved by Google to run on the open source operating system.
• Each implementation of Android requires a royalty to be paid to Google.
• Android applications can only be downloaded from Google Play.
  

  Answers Explanation & Hints: As an open source operating system, Android allows anyone to contribute to the development and evolution of compatible software. Android has been implemented on a wide range of devices and platforms including cameras, smart TVs, and e-book readers. Royalties are not payable to Google, and Google has not tested and approved all available Android applications. Android applications are available from a range of sources.