If a Benevolent Social Planner Chooses to Produce Less Than

If a benevolent social planner chooses to produce less than the equilibrium quantity of a good, then

A) total surplus is maximised.
B) the value placed on the last unit of production by buyers exceeds the cost of production.
C) producer surplus is maximised.
D) the cost of production on the last unit produced exceeds the value placed on it by buyers.
E) consumer surplus is maximised.