Lobbying is:

A. an attempt by an individual or group to influence the passage of legislation by exerting indirect pressure, through advertisements and media coverage, on members of Congress or a state legislature.

B. an attempt by an individual or group to influence the passage of legislation by exerting direct pressure on members of Congress or a state legislature.

C. an attempt by an individual or group to influence the passage of legislation by exerting indirect pressure, through phone calls or emails, on members of Congress or a state legislature.

D. the act of working on a re-election campaign

An iron triangle is made up of an alliance between?