Which best explains why some analysts may be concerned about the existence of iron triangles?

Policies that are made within iron triangles often ignore the needs of interest groups in the state.

Iron triangles contribute to a lack of communication between the legislature and the bureaucracy in charge of implementing new laws.

The close relationships that develop within iron triangles tend to lead to policy making that is largely hidden from the public.

The support between interest groups and bureaucracies tends to reduce the power of the executive branch.