Which of the Following Is/are True Statements About Neuroglia

Which of the following is/are true statements about neuroglia?

A) Neuroglia are nonreactive cells that fulfill a supportive role.
B) Neuroglia maintain homeostasis in the extracellular environment.
C) Neuroglia are a primary component of the nervous system.
D) Neuroglia electrically insulate nerve processes from each other.
E) All of the above are true.