How does upgrading to an Official Artist Channel affect an artist’s subscribers?
(A) Upgrading does not affect subscribers.
(B) Upgrading makes it easier for subscribers to find all of an artist’s music in one place.
(C) Upgrading makes it harder for subscribers to find an artist’s music, because the artist’s catalog has split into three channels.
(D) Upgrading makes it easier for subscribers to learn about new videos, because their notifications are automatically turned back on.