PLEASE HELP ILL MARK YOU THE BRAINLIEST

Which one of the following is an example of an “Iron Triangle"?

Select one:
a. the Congress, Walmart, and JC Penney
b. the American Association for Retired People (AARP), the House Subcommittee on Aging, and the Social Security Administration
c. the Presidential Cabinet, the Congress, and the Supreme Court
d. the National Rifle Association, the House Caucus, and Microsoft