What are two specific challenges for instructors in the virtual classroom environment?
(Choose two)

A.
Instructors cannot see the body language of participants.

B.
Instructors usually have too much content for the time that is allotted.

C.
Participants typically have expense levels.

D.
Participants can easily give their attention to more than one thing, or multitask.

E.
Participants may ask unrelated or irrelevant questions.