When you create a new Channel Grouping in a view, you can
immediately select it in the Acquisition Overview and Channel reports
apply it retroactively and see historical data classified by our new channel definitions
change how reports display your data, without changing the data itself
A and C only
A,B, and C
When you create a new Channel Grouping in a view, you can
Explanation:
Channel Groupings are rule-based groupings of your traffic sources. Throughout Analytics reports, you can see your data organized according to the Default Channel Grouping, a grouping of the most common sources of traffic, like Paid Search and Direct. This allows you to quickly check the performance of each of your traffic channels.
https://www.youtube.com/watch?v=qixuTyhLiwE