The "Primary Motive" of Regulators, According to the Share-The-Gains, Share-The-Pains

The "primary motive" of regulators, according to the share-the-gains, share-the-pains theory, is to

A) maximize their income through accepting monetary payoffs from groups.
B) ensure that every group gets what it wants.
C) ensure that all customers share the benefits of regulation, and not just the wealthiest consumers.
D) keep their jobs.