When Gabriel Made a Rational Choice to Spend His Entire

When Gabriel made a rational choice to spend his entire allowance on chocolate bars,he did so by comparing the

A) self-interest to the social interest.
B) marginal benefits of the chocolate bars to the marginal costs of the chocolate bars.
C) benefits of the chocolate bars to the desire he had for the chocolate bars.
D) opportunity costs of the chocolate bars to the scarcity of the chocolate bars.
E) benefits of the chocolate bars to the scarcity of the chocolate bars.