OG-65

65. Critics of the trend toward privately operated prisons consider corrections facilities to be an integral part of the criminal justice system and question if profits should be made from incarceration.
(A) to be an integral part of the criminal justice system and question if
(B) as an integral part of the criminal justice system and they question if
(C) as being an integral part of the criminal justice system and question whether
(D) an integral part of the criminal justice system and question whether
(E) are an integral part of the criminal justice system. and they question whether

question:

"sth is considered as" is unidomatical ? thought "consider as " is used the same way as "regard as " is.