Which two of the following statements correctly Cisco IOS Software? (Choose two.)

A.
A universal Cisco IOS image includes all software features; additional software features are then
activated by license keys without changing Cisco IOS.

B.
In order to obtain a license file, the product ID and serial number of the device are sent to the
representative Cisco Channel Partner, along with the purchased product activation key.

C.
The Cisco ASR 1000 series features IOS-XE, a software architecture that consists of a platform
component, IOS-XE middleware, and the actual Cisco IOS software.

D.
Cisco IOS 15 is available in two trains; T, which includes bug fixes and new features, and M, which
includes bug fixes only.