What does “(Other)”? indicate in the Channels report? (select two)

(Other) sessions have no campaign value attached to them.
(Other) sessions have no source value attached to them.
(Other) sessions cannot be categorized in any of the channels in this channel grouping.
Investigate (Other) to see if sessions could be categorized by defining a new channel.

The correct answer is:

(Other) sessions cannot be categorized in any of the channels in this channel grouping.
Investigate (Other) to see if sessions could be categorized by defining a new channel.