A Benevolent Social Planner Would Prefer That the Output of Good

Multiple Choice

A benevolent social planner would prefer that the output of good x be decreased from its current level if, at the current level of output of good x,

A) social value = private value = private cost < social cost.
B) private cost < social cost = private value = social value.
C) social cost = private cost = private value < social value.
D) social cost = private cost = private value = social value.