Which of the following are valid ways to deploy an Android application to a device?

Which of the following are valid ways to deploy an Android application to a device?

Answers:

• Using the "adb install /path/to/apk" command from the command prompt/terminal, when USB Debugging Mode is enabled in the device.

• Exporting and signing the package, then browsing it to install.

• Launching the application from an IDE, when USB Debugging Mode is enabled in the device.

• All of these.