What Is the Idea Behind the Subjective Expected Utility Theory

What is the idea behind the subjective expected utility theory?

A) Utilities for a given action vary from person to person,depending on each person's hopes and fears.
B) In making decisions,people use objective criteria for studying probabilities of outcomes but subjective criteria for evaluating each outcome.
C) In making decisions,people seek to maximize their maximum gain.
D) In making decisions,people seek to maximize their minimum gain.