Joe, an employee, wants to show his colleagues how much he knows about smartphones. Joe demonstrates a free movie application that he installed from a third party on his corporate smartphone. Joe’s colleagues were unable to find the application in the app stores. Which of the following allowed Joe to install the application? (Choose two.)

A. Near-field communication.

B. Rooting/jailbreaking

C. Ad-hoc connections
D. Tethering

E. Sideloading