At the quantity of 682 orders of Crispy Chicken Sandwich Tacos from Taco Bell, the marginal social benefit of a Crispy Chicken Sandwich Taco is $3.45 and the marginal social cost is $2.60. To produce the efficient quantity of Crispy Chicken Sandwich Tacos:_________

a. fewer Crispy Chicken Sandwich Tacos should be produced.
b. there should be no change in the amount of Crispy Chicken Sandwich Tacos produced.
c. More information on production costs is needed to determine the efficient level of Crispy Chicken Sandwich Tacos.
d. more Crispy Chicken Sandwich Tacos should be produced.